What is CVE-2020-13361?

CVE-2020-13361 is a low-severity vulnerability in Qemu, classified under Out-of-bounds Write. CVSS score: 3.9/10. Published 2020-05-28.

How severe is CVE-2020-13361?

Low severity. CVSS v3 base score is 3.9 out of 10.

Buffer overflow in Qemu

CVE-2020-13361

In QEMU 5.0.0 and earlier, es1370_transfer_audio in hw/audio/es1370.c does not properly validate the frame count, which allows guest OS users to trigger an out-of-bounds access during an es1370_write() operation.

Vulnerability class: Buffer Overflow

Published 2020-05-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.9 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L.

EPSS exploit prediction

EPSS: 0.004 (28.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Qemu
Canonical Ubuntu Linux — versions 16.04, 18.04, 20.04
Debian Linux — versions 8.0, 9.0, 10.0
openSUSE Leap — versions 15.2

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

lists.gnu.org/archive/html/qemu-devel/2020-05/msg03983.html (Patch, Third Party Advisory)
www.openwall.com/lists/oss-security/2020/05/28/1 (Patch, Mailing List, Third Party Advisory)
security-tracker.debian.org/tracker/CVE-2020-13361 (Third Party Advisory)
security.netapp.com/advisory/ntap-20200608-0003/ (Third Party Advisory)
lists.debian.org/debian-lts-announce/2020/06/msg00032.html (mailing-list, Mailing List, Third Party Advisory)
www.debian.org/security/2020/dsa-4728 (vendor-advisory, Third Party Advisory)
lists.debian.org/debian-lts-announce/2020/07/msg00020.html (mailing-list, Mailing List, Third Party Advisory)
lists.opensuse.org/opensuse-security-announce/2020-07/msg00086.html (vendor-advisory, Mailing List, Third Party Advisory)
usn.ubuntu.com/4467-1/ (vendor-advisory, Third Party Advisory)
security.gentoo.org/glsa/202011-09 (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2020-13361?: CVE-2020-13361 is a low-severity vulnerability in Qemu, classified under Out-of-bounds Write. CVSS score: 3.9/10. Published 2020-05-28.
How severe is CVE-2020-13361?: Low severity. CVSS v3 base score is 3.9 out of 10.