CVE-2026-26740

highpriority · track · 0EPSS 0.006 · 51 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.64% (51st) EPSS

CVSS 8.2 · high

Is it mine?

65 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Buffer Overflow vulnerability in giflib v.5.2.2 allows a remote attacker to cause a denial of service via the EGifGCBToExtension overwriting an existing Graphic Control Extension block without validating its allocated size.

cvss

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

8.2

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18.2highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Hsecondary · FSTEC (BDU) RU

v3.18.2highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Hsecondary · ENISA EU

v3.18.2highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Hsecondaryexploitability 3.9 · impact 4.2

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondaryexploitability 3.9 · impact 3.6

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: poc · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USCWE-787US

affected products (65)

Products and version ranges known to be affected.

Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
RESF Rocky Linuxall versionscert_bundDEcpe:/o:resf:rocky_linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Red Hat Enterprise Linux 10.0 Extended Update Supportall versionscert_bundDEcpe:/o:redhat:enterprise_linux:10.0_extended_update_support
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportall versionscert_bundDEcpe:/o:redhat:enterprise_linux:8.4_advanced_mission_critical_update_support
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-Onall versionscert_bundDEcpe:/o:redhat:enterprise_linux:8.4_extended_update_support_long-life_add-on
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportall versionscert_bundDEcpe:/o:redhat:enterprise_linux:8.6_advanced_mission_critical_update_support
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-Onall versionscert_bundDEcpe:/o:redhat:enterprise_linux:8.6_extended_update_support_long-life_add-on
Red Hat Enterprise Linux 9.6 Extended Update Supportall versionscert_bundDEcpe:/o:redhat:enterprise_linux:9.6_extended_update_support
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
n/a n/a≤ n/aenisa_euvdEU
Novell Inc. OpenSUSE Leap≤ 15.6fstec_bduRU
Novell Inc. OpenSUSE Leap≤ 15.4fstec_bduRU
Novell Inc. OpenSUSE Leap≤ 15.3fstec_bduRU
Novell Inc. OpenSUSE Leap≤ 15.5fstec_bduRU
Novell Inc. SUSE Liberty Linux≤ 8fstec_bduRU
Novell Inc. SUSE Liberty Linux≤ 7 LTSSfstec_bduRU
Novell Inc. SUSE Liberty Linux≤ 9fstec_bduRU
Novell Inc. SUSE Liberty Linux≤ 10fstec_bduRU

showing 20 of 65

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-2137Red Hat Enterprise Linux (giflib): Schwachstelle ermöglicht Denial of ServiceDeutsch2026-06-29csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Red Hat Enterprise Linux ausnutzen, um einen Denial of Service Angriff durchzuführen.

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 2026-03-18modified 2026-07-23

references (24)

External citations — patches, advisories, analysis.

scry

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