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CVE-2021-32941

39
FAUCET Score

CVE-2021-32941 is a critical stack-based buffer overflow vulnerability affecting Annke N48PBB Network Video Recorders running firmware version 3.4.106 build 200422 and prior. This flaw allows an unauthenticated remote attacker to execute arbitrary code with root privileges. With a CVSS score of 9.8 (Critical), it presents a severe risk due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation (KEV: No) and no public exploit code (Metasploit, Nuclei, ExploitDB: None), the vulnerability has garnered significant community discussion and media coverage, indicating high awareness.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.4.106CPE matchmatch criteria
cpe:2.3:o:annke:n48pbb_firmware:*:*:*:*:*:*:*:*
3.4.106CPE matchmatch criteria
cpe:2.3:o:annke:n48pbb_firmware:3.4.106:-:*:*:*:*:*:*
3.4.106CPE matchmatch criteria
cpe:2.3:o:annke:n48pbb_firmware:3.4.106:build_200422:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.4CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
14.19%
Probability of exploitation in next 30 days
EPSS Percentile
96.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1419 is in the 92nd percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

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

cisa.gov / uscert/ics/advisories/icsa-21-238-02
Third Party AdvisoryUS Government Resource