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CVE-2021-32272

25
FAUCET Score

CVE-2021-32272 describes a heap-buffer-overflow vulnerability in the faad2 audio decoder, specifically within the stszin function in mp4read.c, affecting versions prior to 2.10.0 and various Debian distributions. This high-severity flaw (CVSS 7.8) can be triggered by an unauthenticated attacker through user interaction (e.g., opening a malicious file), potentially leading to arbitrary code execution with high impact on confidentiality, integrity, and availability. While the vulnerability is not listed on the KEV catalog and has no known public exploits or significant community discussion, its potential for code execution warrants attention.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.10.0CPE matchmatch criteria
cpe:2.3:a:faad2_project:faad2:*:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.31%
Probability of exploitation in next 30 days
EPSS Percentile
67.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0131 is in the 65th percentile among its peer group of 11,617 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / knik0/faad2/commit/1b71a6ba963d131375f5e489b3b25e36f19f3f24
PatchThird Party Advisory
github.com / knik0/faad2/issues/57
ExploitIssue TrackingThird Party Advisory
debian.org / security/2022/dsa-5109
Third Party Advisory