CVE-2021-20271

mediumpriority · track · 28OT risk · elevatedEPSS 0.008 · 55 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.77% (55th) EPSS

CVSS 5.1 · medium

Is it mine?

42 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

A flaw was found in RPM's signature check functionality when reading a package file. This flaw allows an attacker who can convince a victim to install a seemingly verifiable package, whose signature header was modified, to cause RPM database corruption and execute code. The highest threat from this vulnerability is to data integrity, confidentiality, and system availability.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.1–7.5

v2.05.1mediumAV:N/AC:H/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 4.9 · impact 6.4

v3.17highCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1 · impact 5.9

v3.17.5highAV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.16.4mediumCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-345USCWE-345US

affected products (42)

Products and version ranges known to be affected.

IBM InfoSphere Information Serverall versionscert_bundDEcpe:/a:ibm:infosphere_information_server:-
IBM QRadar SIEM 7.3all versionscert_bundDEcpe:/a:ibm:qradar_siem:7.3
IBM QRadar SIEM 7.4all versionscert_bundDEcpe:/a:ibm:qradar_siem:7.4
IBM QRadar SIEM 7.5.0all versionscert_bundDEcpe:/a:ibm:qradar_siem:7.5.0
n/a rpm≤ all versionsenisa_euvdEU
Fedora Project Fedora≤ 34fstec_bduRU
Fedora Project Fedora≤ 32fstec_bduRU
Fedora Project Fedora≤ 33fstec_bduRU
Novell Inc. OpenSUSE Leap≤ 15.2fstec_bduRU
Novell Inc. OpenSUSE Leap≤ 15.3fstec_bduRU
Red Hat Inc. Red Hat Enterprise Linux≤ 7.7 Advanced Update Supportfstec_bduRU
Red Hat Inc. Red Hat Enterprise Linux≤ 7.7 Telco Extended Update Supportfstec_bduRU
Red Hat Inc. Red Hat Enterprise Linux≤ 7.6 Update Services for SAP Solutionsfstec_bduRU
Red Hat Inc. Red Hat Enterprise Linux≤ 7.6 Advanced Update Supportfstec_bduRU
Red Hat Inc. Red Hat Enterprise Linux≤ 7.6 Telco Extended Update Supportfstec_bduRU
Red Hat Inc. Red Hat Enterprise Linux≤ 8.2 Extended Update Supportfstec_bduRU
Red Hat Inc. Red Hat Enterprise Linux≤ 8fstec_bduRU
Red Hat Inc. Red Hat Enterprise Linux≤ 7fstec_bduRU
АО «НППКТ» ОСОН ОСнова Оnyx≤ 2.5fstec_bduRU
ООО «РусБИТех-Астра» Astra Linux Special Edition≤ 1.7fstec_bduRU

showing 20 of 42

advisories (3)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2022-0676Juniper Junos Space: Mehrere SchwachstellenDeutsch2022-07-13csaf · cert_bundDE
Ein entfernter, anonymer, authentisierter oder lokaler Angreifer kann mehrere Schwachstellen in Juniper Junos Space ausnutzen, um einen Denial-of-Service-Zustand herbeizuführen, vertrauliche Informationen offenzulegen, Daten zu manipulieren oder zu verändern, seine Privilegien zu erweitern und Sicherheitsmaßnahmen zu umgehen.
WID-SEC-W-2022-2020RPM: Mehrere SchwachstellenDeutsch2021-03-31csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen in RPM und Red Hat Enterprise Linux ausnutzen, um beliebigen Programmcode mit den Rechten des Dienstes auszuführen und um Daten zu manipulieren.
WID-SEC-W-2025-0227IBM QRadar SIEM: Mehrere SchwachstellenDeutsch2021-11-30csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in IBM QRadar SIEM ausnutzen, um seine Privilegien zu erweitern, Administratorrechte zu erlangen, beliebigen Programmcode auszuführen, Informationen offenzulegen, Dateien zu manipulieren oder Sicherheitsvorkehrungen zu umgehen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund NVD CVE.org MITRE

published 2021-03-26modified 2026-06-17

references (79)

External citations — patches, advisories, analysis.

scry

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