CVSS 3.1
6.0 mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:HCVE-2020-27821
Medium (6.0). EPSS 0.4% chance of exploitation in the next 30 days.
A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting in a denial of service. This flaw affects QEMU versions prior to 5.2.0.
Severity
- EPSS
- 0.4% chance of exploitation in the next 30 days; higher than 30% of CVEs (scores of 2026-10-31)
- CWE
- CWE-787
- Published
- Modified
- Record from
- the NVD, synced
Affected
- debian:debian_linux
- qemu:qemu