CVE-2026-26740
8.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| n/a | n/a | n/a | affected |
Weaknesses
- n/a
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: yes
- Technical Impact: partial
giflib: giflib: Denial of Service via buffer overflow in EGifGCBToExtension
Additional References
- 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
- https://access.redhat.com/errata/RHSA-2026:33447
- https://access.redhat.com/errata/RHSA-2026:33502
- https://access.redhat.com/errata/RHSA-2026:33503
- https://access.redhat.com/errata/RHSA-2026:33450
- https://access.redhat.com/errata/RHSA-2026:33455
- https://access.redhat.com/errata/RHSA-2026:33456
- https://access.redhat.com/errata/RHSA-2026:33509
- https://access.redhat.com/errata/RHSA-2026:33452
- https://access.redhat.com/errata/RHSA-2026:33451
- https://access.redhat.com/errata/RHSA-2026:33501
References
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