VDB
CVE-2026-4426
CVE-2026-4426
PUBLISHED
CVSS 6.5 MEDIUM
A flaw was found in libarchive. An Undefined Behavior vulnerability exists in the zisofs decompression logic, caused by improper validation of a field (`pz_log2_bs`) read from ISO9660 Rock Ridge extensions. A remote attacker can exploit this by supplying a specially crafted ISO file. This can lead to incorrect memory allocation and potential application crashes, resulting in a denial-of-service (DoS) condition.
EPSS 0.19% · 40.0th percentile
Risk Scores
CVSS v3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS Score
0.19%
40.0th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Enterprise Linux 8 | |
| Red Hat | Red Hat Enterprise Linux 10 | |
| Red Hat | Red Hat Enterprise Linux 7 | |
| Red Hat | Red Hat OpenShift Container Platform 4 | |
| Red Hat | Red Hat Enterprise Linux 6 | |
| Red Hat | Red Hat Enterprise Linux 9 |
Timeline
- Mar 19, 2026 CVE Published
- Mar 19, 2026 PoC Published
- Mar 20, 2026 EPSS Score
- Mar 20, 2026 Coalition ESS Score
- Mar 21, 2026 EPSS Score
- Mar 21, 2026 Coalition ESS Score
- Mar 22, 2026 EPSS Score
- Mar 23, 2026 EPSS Score
- Mar 24, 2026 EPSS Score
- Mar 25, 2026 EPSS Score
- Mar 29, 2026 Security Advisory
- May 3, 2026 CVE Updated