What is CVE-2020-27616?

CVE-2020-27616 is a medium-severity vulnerability in Qemu, classified under Incorrect Calculation. CVSS score: 6.5/10. Published 2020-11-06.

How severe is CVE-2020-27616?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Qemu

CVE-2020-27616

ati_2d_blt in hw/display/ati_2d.c in QEMU 4.2.1 can encounter an outside-limits situation in a calculation. A guest can crash the QEMU process.

Published 2020-11-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.025 (84.3th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.025 · newest: 0.025 · change: 0.000

Affected products

Qemu — versions 4.2.1

Weakness classification (CWE)

CWE-682 — Incorrect Calculation

References

lists.nongnu.org/archive/html/qemu-devel/2020-10/msg05018.html (Patch, Mailing List, Third Party Advisory)
www.openwall.com/lists/oss-security/2020/11/03/2 (Patch, Mailing List, Third Party Advisory)
security.netapp.com/advisory/ntap-20201202-0002/ (Third Party Advisory)

Frequently asked questions

What is CVE-2020-27616?: CVE-2020-27616 is a medium-severity vulnerability in Qemu, classified under Incorrect Calculation. CVSS score: 6.5/10. Published 2020-11-06.
How severe is CVE-2020-27616?: Medium severity. CVSS v3 base score is 6.5 out of 10.