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CVE-2021-32277

26
FAUCET Score

CVE-2021-32277 describes a heap-buffer-overflow vulnerability in the sbr_qmf_analysis_32 function within faad2 versions up to 2.10.0, potentially affecting Debian and faad2_project distributions. This high-severity vulnerability (CVSS 7.8) can lead to arbitrary code execution with low attack complexity, requiring user interaction but no prior privileges. While the EPSS score is very low and it's not listed in CISA's KEV catalog, there is currently no public exploit code available (Metasploit, Nuclei, ExploitDB), and it has received no community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.10.0CPE matchmatch criteria
cpe:2.3:a:faad2_project:faad2:*:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
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

Remediation records are not available for this CVE.

References

github.com / knik0/faad2/issues/59
ExploitIssue TrackingThird Party Advisory
lists.debian.org / debian-lts-announce/2021/10/msg00020.html
Mailing ListThird Party Advisory
debian.org / security/2022/dsa-5109
Third Party Advisory