CVE-2021-26937

highPriorität · verfolgen · 42EPSS 0.091 · 95. PerzentilEURUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
9.15% (95th) EPSS
CVSS 7.5 · high
Is it mine?
33 products
Prüfe deine Angriffsfläche
Who says so?
5 sources
cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · bewertet 2026-10-27

encoding.c in GNU Screen through 4.8.0 allows remote attackers to cause a denial of service (invalid write access and application crash) or possibly have unspecified other impact via a crafted UTF-8 character sequence.

01

Behebungen

Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

Ein Hersteller-Fix ist verfügbar.

  • Behobenscreen-0:4.1.0-0.27.20120314git3c2946.el7_9.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:0742
  • Behobenscreen-0:4.1.0-0.27.20120314git3c2946.el7_9.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:0742
  • Behobenscreen-0:4.1.0-0.27.20120314git3c2946.el7_9.s390x as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:0742
  • Behobenscreen-0:4.1.0-0.27.20120314git3c2946.el7_9.src as a component of Red Hat Enterprise Linux Client Optional (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:0742
  • Behobenscreen-0:4.1.0-0.27.20120314git3c2946.el7_9.src as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:0742
  • Behobenscreen-0:4.1.0-0.27.20120314git3c2946.el7_9.src as a component of Red Hat Enterprise Linux Workstation (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:0742
  • Behobenscreen-0:4.1.0-0.27.20120314git3c2946.el7_9.x86_64 as a component of Red Hat Enterprise Linux Client Optional (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:0742
  • Behobenscreen-0:4.1.0-0.27.20120314git3c2946.el7_9.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:0742
  • Behobenscreen-0:4.1.0-0.27.20120314git3c2946.el7_9.x86_64 as a component of Red Hat Enterprise Linux Workstation (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:0742
  • Behobenscreen-debuginfo-0:4.1.0-0.27.20120314git3c2946.el7_9.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:0742
  • Behobenscreen-debuginfo-0:4.1.0-0.27.20120314git3c2946.el7_9.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:0742
  • Behobenscreen-debuginfo-0:4.1.0-0.27.20120314git3c2946.el7_9.s390x as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:0742
  • Behobenscreen-debuginfo-0:4.1.0-0.27.20120314git3c2946.el7_9.x86_64 as a component of Red Hat Enterprise Linux Client Optional (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:0742
  • Behobenscreen-debuginfo-0:4.1.0-0.27.20120314git3c2946.el7_9.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:0742
  • Behobenscreen-debuginfo-0:4.1.0-0.27.20120314git3c2946.el7_9.x86_64 as a component of Red Hat Enterprise Linux Workstation (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:0742
  • Behobenscreen-0:4.1.0-0.25.20120314git3c2946.el7_7.1.ppc64le as a component of Red Hat Enterprise Linux Server E4S (v. 7.7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2022:1074
  • Behobenscreen-0:4.1.0-0.25.20120314git3c2946.el7_7.1.src as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2022:1074
  • Behobenscreen-0:4.1.0-0.25.20120314git3c2946.el7_7.1.src as a component of Red Hat Enterprise Linux Server E4S (v. 7.7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2022:1074
  • Behobenscreen-0:4.1.0-0.25.20120314git3c2946.el7_7.1.src as a component of Red Hat Enterprise Linux Server TUS (v. 7.7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2022:1074
  • Behobenscreen-0:4.1.0-0.25.20120314git3c2946.el7_7.1.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2022:1074
  • Behobenscreen-0:4.1.0-0.25.20120314git3c2946.el7_7.1.x86_64 as a component of Red Hat Enterprise Linux Server E4S (v. 7.7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2022:1074
  • Behobenscreen-0:4.1.0-0.25.20120314git3c2946.el7_7.1.x86_64 as a component of Red Hat Enterprise Linux Server TUS (v. 7.7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2022:1074
  • Behobenscreen-debuginfo-0:4.1.0-0.25.20120314git3c2946.el7_7.1.ppc64le as a component of Red Hat Enterprise Linux Server E4S (v. 7.7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2022:1074
  • Behobenscreen-debuginfo-0:4.1.0-0.25.20120314git3c2946.el7_7.1.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2022:1074
  • Behobenscreen-debuginfo-0:4.1.0-0.25.20120314git3c2946.el7_7.1.x86_64 as a component of Red Hat Enterprise Linux Server E4S (v. 7.7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2022:1074
  • Behobenscreen-debuginfo-0:4.1.0-0.25.20120314git3c2946.el7_7.1.x86_64 as a component of Red Hat Enterprise Linux Server TUS (v. 7.7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2022:1074
  • Workaroundscreen-0:4.1.0-0.27.20120314git3c2946.el7_9.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-0:4.1.0-0.27.20120314git3c2946.el7_9.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-0:4.1.0-0.27.20120314git3c2946.el7_9.s390x as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-0:4.1.0-0.27.20120314git3c2946.el7_9.src as a component of Red Hat Enterprise Linux Client Optional (v. 7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-0:4.1.0-0.27.20120314git3c2946.el7_9.src as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-0:4.1.0-0.27.20120314git3c2946.el7_9.src as a component of Red Hat Enterprise Linux Workstation (v. 7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-0:4.1.0-0.27.20120314git3c2946.el7_9.x86_64 as a component of Red Hat Enterprise Linux Client Optional (v. 7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-0:4.1.0-0.27.20120314git3c2946.el7_9.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-0:4.1.0-0.27.20120314git3c2946.el7_9.x86_64 as a component of Red Hat Enterprise Linux Workstation (v. 7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-debuginfo-0:4.1.0-0.27.20120314git3c2946.el7_9.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-debuginfo-0:4.1.0-0.27.20120314git3c2946.el7_9.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-debuginfo-0:4.1.0-0.27.20120314git3c2946.el7_9.s390x as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-debuginfo-0:4.1.0-0.27.20120314git3c2946.el7_9.x86_64 as a component of Red Hat Enterprise Linux Client Optional (v. 7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-debuginfo-0:4.1.0-0.27.20120314git3c2946.el7_9.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-debuginfo-0:4.1.0-0.27.20120314git3c2946.el7_9.x86_64 as a component of Red Hat Enterprise Linux Workstation (v. 7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-0:4.1.0-0.25.20120314git3c2946.el7_7.1.ppc64le as a component of Red Hat Enterprise Linux Server E4S (v. 7.7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-0:4.1.0-0.25.20120314git3c2946.el7_7.1.src as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-0:4.1.0-0.25.20120314git3c2946.el7_7.1.src as a component of Red Hat Enterprise Linux Server E4S (v. 7.7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-0:4.1.0-0.25.20120314git3c2946.el7_7.1.src as a component of Red Hat Enterprise Linux Server TUS (v. 7.7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-0:4.1.0-0.25.20120314git3c2946.el7_7.1.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-0:4.1.0-0.25.20120314git3c2946.el7_7.1.x86_64 as a component of Red Hat Enterprise Linux Server E4S (v. 7.7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-0:4.1.0-0.25.20120314git3c2946.el7_7.1.x86_64 as a component of Red Hat Enterprise Linux Server TUS (v. 7.7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-debuginfo-0:4.1.0-0.25.20120314git3c2946.el7_7.1.ppc64le as a component of Red Hat Enterprise Linux Server E4S (v. 7.7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-debuginfo-0:4.1.0-0.25.20120314git3c2946.el7_7.1.x86_64 as a component of Red Hat Enterprise Linux Server AUS (v. 7.7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-debuginfo-0:4.1.0-0.25.20120314git3c2946.el7_7.1.x86_64 as a component of Red Hat Enterprise Linux Server E4S (v. 7.7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

  • Workaroundscreen-debuginfo-0:4.1.0-0.25.20120314git3c2946.el7_7.1.x86_64 as a component of Red Hat Enterprise Linux Server TUS (v. 7.7)redhat_csaf

    This flaw is in utf8 processing; if your screen configuration does not enable utf8 (through configuration such as "defencoding utf-8" in .screenrc), you are not vulnerable.

02

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

9.8
010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USAusnutzbarkeit 10 · Auswirkung 6.4
v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USAusnutzbarkeit 3.9 · Auswirkung 5.9
v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU
v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
v3.19.6criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:Hsecondary · Red Hat Product Security US
03

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

04

betroffene Produkte (33)

Betroffene Produkte und Versionsbereiche.

20 von 33 angezeigt
05

Advisories (2)

Hersteller- und Ökosystem-Meldungen dazu.

  • RHSA-2021:0742Red Hat Security Advisory: screen security update2021-03-08csaf · redhat_csafUS

    An update for screen is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

  • RHSA-2022:1074Red Hat Security Advisory: screen security update2022-03-28csaf · redhat_csafUS

    An update for screen is now available for Red Hat Enterprise Linux 7.7 Advanced Update Support, Red Hat Enterprise Linux 7.7 Telco Extended Update Support, and Red Hat Enterprise Linux 7.7 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

06

auch bekannt als (4)

Weitere Namen und Kennungen dieser Entität.

07

quellen

Welche Quellen diesen Datensatz belegen und wann.

veröffentlicht 2021-02-09geändert 2026-06-17
09

Referenzen (42)

Externe Belege — Patches, Meldungen, Analysen.

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