CVE-2021-31566EPSS p33.2%
CVE-2021-31566CVE-2021-31566
libarchive / libarchive
Description
An improper link resolution flaw can occur while extracting an archive leading to changing modes, times, access control lists, and flags of a file outside of the archive. An attacker may provide a malicious archive to a victim user, who would trigger this flaw when trying to extract the archive. A local attacker may use this flaw to gain more privileges in a system.
Scoring
| CVSS | 7.8 () |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| EPSS | 0.39% probability of exploitation · percentile 33.2% · 2026-11-03T12:00:27Z |
| Last modified | 2026-11-02 |