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Fencer Vulns
critical 9.8

CVE-2021-30475 json

aom_dsp/noise_model.c in libaom in AOMedia before 2021-03-24 has a buffer overflow.

published 2021-06-04 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-17398

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.2%
EPSS 2.2% chance of exploitation in 30 days, percentile 82%
public exploits
0
none known

Summary

aom_dsp/noise_model.c in libaom in AOMedia before 2021-03-24 has a buffer overflow.

Patch / fix

  • aomedia aomedia 2021-03-24
  • aom Debian 14, Debian 13, Debian 12 3.2.0-1

debian advisories DEBIAN-CVE-2021-30475

  • aom Ubuntu 20.04 LTS 1.0.0.errata1-3+deb11u1build0.20.04.1

ubuntu advisories UBUNTU-CVE-2021-30475

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libaom SLE Module for Desktop Applications 15 SP3, SLE Module for Desktop Applications 15 SP2 1.0.0-3.3.1

suse advisories SUSE-SU-2021:3005-1

  • libaom openSUSE Tumbleweed 3.1.2-1.2
  • libaom openSUSE Leap 15.2 1.0.0-lp152.3.3.1
  • libaom openSUSE Leap 15.3 1.0.0-3.3.1

opensuse advisories openSUSE-SU-2024:10924-1openSUSE-SU-2021:1254-1openSUSE-SU-2021:3005-1

  • aom Alpine 3.24, Alpine 3.23, Alpine 3.22 +7 more 3.1.1-r0

alpine advisories ALPINE-CVE-2021-30475

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • aom Arch Linux 3.2.0-1

arch linux advisories AVG-2039

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-30475 updated cvss 7.4

libaom: Buffer overflow in aom_dsp/noise_model.c

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.22% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.