8.2

CVE-2026-26740

Exploit
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Giflib Project ≫ Giflib Version5.2.2
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.62% 0.452
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
134c704f-9b21-4f2e-91b3-4a467353bcc0 8.2 3.9 4.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
0b0ca135-0b70-47e7-9f44-1890c2a1c46c 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

https://bugzilla.redhat.com/show_bug.cgi?id=2448747
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26740.json
https://github.com/zakkanijia/POC/blob/main/giflib/giftool/giflib_giftool_gce_len_heap_oobwrite_disclosure.md
Third Party Advisory
Exploit
https://access.redhat.com/errata/RHSA-2026:33447
https://access.redhat.com/errata/RHSA-2026:33450
https://access.redhat.com/errata/RHSA-2026:33451
https://access.redhat.com/errata/RHSA-2026:33452
https://access.redhat.com/errata/RHSA-2026:33455
https://access.redhat.com/errata/RHSA-2026:33456
https://access.redhat.com/errata/RHSA-2026:33501
https://access.redhat.com/errata/RHSA-2026:33502
https://access.redhat.com/errata/RHSA-2026:33503
https://access.redhat.com/errata/RHSA-2026:33509
https://access.redhat.com/errata/RHSA-2026:36004
https://access.redhat.com/errata/RHSA-2026:36005
https://access.redhat.com/errata/RHSA-2026:36006
https://access.redhat.com/security/cve/CVE-2026-26740