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 valida…
High CVSS 8.2
Summary
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.
In-depth triage · Auto channel
No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).
Affected products
- :
Sources
- NVD DATABASE
Original Links
- https://github.com/zakkanijia/POC/blob/main/giflib/giftool/giflib_giftool_gce_len_heap_oobwrite_disclosure.md 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/errata/RHSA-2026:9683
- https://access.redhat.com/errata/RHSA-2026:9686
- https://access.redhat.com/errata/RHSA-2026:9689
- https://access.redhat.com/errata/RHSA-2026:9693
- https://access.redhat.com/security/cve/CVE-2026-26740
- https://bugzilla.redhat.com/show_bug.cgi?id=2448747
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26740.json
Timeline
- nvd_ingest NVD