CVSS 3.1
7.5 highCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:HCVE-2021-20181
High (7.5). EPSS 0.3% chance of exploitation in the next 30 days.
A race condition flaw was found in the 9pfs server implementation of QEMU up to and including 5.2.0. This flaw allows a malicious 9p client to cause a use-after-free error, potentially escalating their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity as well as system availability.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 26% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-362, CWE-367
- Published
- Modified
- Record from
- the NVD, synced
Affected
- debian:debian_linux
- qemu:qemu