CVE-2026-5121 - Vulnerability Analysis
CriticalCVSS: 9.8Last Updated: March 31, 2026
libarchive - Integer Overflow
Overview
libarchive contains an integer overflow caused by zisofs block pointer allocation logic on 32-bit systems, letting remote attackers trigger heap buffer overflow and potentially execute arbitrary code, exploit requires crafted ISO9660 image.
Severity & Score
Impact
Remote attackers can execute arbitrary code via crafted ISO9660 images, leading to full system compromise on 32-bit systems.
Mitigation
Update to the latest version of libarchive.
References
Social Media Activity(2 posts)
š“ CVE-2026-5121 - Critical (9.8) A flaw was found in libarchive. On 32-bit systems, an integer overflow vulnerability exists in the zisofs block pointer allocation logic. A remote attacker can exploit this by providing a specially crafted ISO9660 image, which can lead to a heap b... š https://www.thehackerwire.com/vulnerability/CVE-2026-5121/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack
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š“ CVE-2026-5121 - Critical (9.8) A flaw was found in libarchive. On 32-bit systems, an integer overflow vulnerability exists in the zisofs block pointer allocation logic. A remote attacker can exploit this by providing a specially crafted ISO9660 image, which can lead to a heap b... š https://www.thehackerwire.com/vulnerability/CVE-2026-5121/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack
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Details
- CVE ID
- CVE-2026-5121
- Severity
- Critical
- CVSS Score
- 9.8
- Type
- integer_overflow
- Status
- unconfirmed
- EPSS
- 5.3%
- Social Posts
- 2
CWE
- CWE-190
CVSS Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H