CVE-2026-26740

HIGH EPSS 23.7%

Published Mar 18, 20263mo ago · Modified Mar 21, 20263mo ago

8.2 CVSS 3.1

High

Published Mar 18, 2026 3mo ago

Last Modified Mar 21, 2026 3mo ago

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.

CVSS Details

Base Score

8.2

Exploitability

3.9

Impact

4.2

Vector string

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope Unchanged

Confidentiality None

Integrity Low

Availability High

Threat Intelligence

EPSS Exploit Probability

23.7% percentile

Exploit & Patch Status

Public Exploit Known

No Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

Affected Products 1

Vendor	Product	Version	Range
giflib_project	giflib	5.2.2	any

References 1

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

ExploitThird Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.