CVE-2026-26740 Details
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.
A buffer overflow vulnerability has been identified in giflib version 5.2.2. This vulnerability allows remote attackers to cause a denial-of-service by exploiting the EGifGCBToExtension function, which overwrites an existing Graphics Control Extension (GCE) block without proper size validation. The issue arises when a crafted GIF is processed, leading to a heap-based out-of-bounds write.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 18, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
Weakness Enumeration
Affected Products
| Product | Versions |
|---|---|
| giflib project giflib | 5.2.2 |
CPE
Remediation
| |
Change History
11 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Modified | redhat-SADP |
| Jul 15, 2026 | CVE Modified | redhat-SADP |
| Jul 7, 2026 | CVE Modified | redhat-SADP |
| Jul 1, 2026 | CVE Modified | redhat-SADP |
| Jun 30, 2026 | CVE Modified | redhat-SADP |
| Jun 30, 2026 | CVE Modified | redhat-SADP |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Mar 21, 2026 | Initial Analysis | [email protected] |
| Mar 18, 2026 | CVE Modified | CISA-ADP |
| Mar 18, 2026 | New CVE Received | [email protected] |