CVE-2026-26740HIGH 8.2EPSS p23.5%

CVE-2026-26740CVE-2026-26740

Description

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.

Scoring

CVSS 3.18.2 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
EPSS0.32% probability of exploitation · percentile 23.5% · 2026-06-19T12:03:05Z
Published2026-03-18
Last modified2026-03-21

Underlying weaknesses· 1

CWE-787

References

  1. https://github.com/zakkanijia/POC/blob/main/giflib/giftool/giflib_giftool_gce_len_heap_oobwrite_disclosure.md

1

TypeTargetConfidenceTier
WeaknessOut-of-bounds Writecwe-7870%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
CVE-2025-27796
CVE
CVE-2026-5201
CVE
CVE-2026-30141
CVE
CVE-2023-52356
CVE
CVE-2026-0660
CVE
CVE-2026-32221
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.