CVE-2026-5121
⚠️ highSummary
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 buffer overflow. This could potentially allow for arbitrary code execution on the affected system.
CVSS Score
7.5
High
EPSS Score
0.1
Exploit Probability
Published Date
2026-03-30
First Seen: 2026-03-31
📊 Relative Risk Intelligence
This CVE is Moderate Risk - more severe than 69.1% of all 318,071 vulnerabilities in our database.
#98,337
Above average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: Mar 31, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
YES
Can be exploited automatically
💥 Technical Impact
Total
Complete system compromise possible
🏆 Discovered By
Red Hat would like to thank Elhanan Haenel for reporting this issue.
SSVC data provided by
CISA
Last Modified
2026-04-20
Source
NVD 🔗
CVSS Vector 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE IDs (Weakness Types)