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Fencer Vulns
medium 5.5

CVE-2021-3522 json

GStreamer before 1.18.4 may perform an out-of-bounds read when handling certain ID3v2 tags.

published 2021-06-02 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-26838

cvss
5.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
5.4%
EPSS 5.4% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

GStreamer before 1.18.4 may perform an out-of-bounds read when handling certain ID3v2 tags.

Patch / fix

  • gstreamer gstreamer 1.18.4
  • gst-plugins-base1.0 Debian 14, Debian 13, Debian 12 1.18.4-2

debian advisories DEBIAN-CVE-2021-3522

  • gst-plugins-base1.0 Ubuntu 18.04 LTS 1.14.5-0ubuntu1~18.04.3
  • gst-plugins-base1.0 Ubuntu 20.04 LTS 1.16.2-4ubuntu0.1
  • gst-plugins-base1.0 Ubuntu Pro 16.04 LTS 1.8.3-1ubuntu0.3+esm1

ubuntu advisories UBUNTU-CVE-2021-3522

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

  • gstreamer-plugins-base SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLE High Performance Computing 15 SP1-LTSS +1 more 1.12.5-150000.3.6.1
  • gstreamer-0_10-plugins-base SLE Workstation Extension 12 SP5, SLE Software Development Kit 12 SP5 0.10.36-18.6.1
  • gstreamer-plugins-base SLES for SAP 12 SP5, SLES 12 SP5, SLE Workstation Extension 12 SP5 +1 more 1.8.3-13.6.1
  • gstreamer-plugins-base SLE Module for Package Hub 15 SP3, SLE Module for Basesystem 15 SP3, SLE Micro 5.2 +3 more 1.16.3-150200.4.6.2

suse advisories SUSE-SU-2023:3801-1SUSE-SU-2022:3916-1SUSE-SU-2022:3911-1SUSE-SU-2022:3907-1

  • gst-plugins-base Alpine 3.24, Alpine 3.23, Alpine 3.22 +4 more 1.18.4-r0

alpine advisories ALPINE-CVE-2021-3522

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

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-2021-3522 updated cvss 5.5

gstreamer-plugins-base: out-of-bounds read when handling certain ID3v2 tags

  • Red Hat Enterprise Linux 6 gstreamer-plugins-base Red Hat Enterprise Linux 7 gstreamer-plugins-base, gstreamer-plugins-base-tools
    affected: no fix planned “Out of support scope”

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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
5 mo ago

Exploit prediction

5.37% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Affected products

  • n/a GStreamer

Classification

Weakness

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.