CVE-2021-32941

Q: How do I fix CVE-2021-32941?

Upgrade n48pbb firmware to 3.4.106 or later.

Q: Is CVE-2021-32941 being actively exploited?

Not that we know of. CVE-2021-32941 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 14.6% is the estimated probability that it will be exploited in the next 30 days. That is higher than 96% of all scored CVEs.

Q: How severe is CVE-2021-32941?

CVE-2021-32941 has a CVSS v3 base score of 9.4, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2021-32941 affect?

Published advisories record a fix for n48pbb firmware (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

CRITICALEPSS 96th pctl

9.4

CVSS v3

NVD

Description

Annke N48PBB (Network Video Recorder) products of version 3.4.106 build 200422 and prior are vulnerable to a stack-based buffer overflow, which allows an unauthorized remote attacker to execute arbitrary code with the same privileges as the server user (root).

CWE-121Stack-based Buffer Overflow CWE-787Out-of-bounds Write

How to fix

Remediation Available

n48pbb firmwareNVD

Affected:< 3.4.106Fixed in:3.4.106CVE-2021-32941derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

14.59%probability of exploitation in 30 days

96thpercentile

Very high risk: more likely to be exploited than 96% of all known CVEs.

References

Third-Party Advisory1

cisa.gov

Related Vulnerabilities

Other CWE-121 (Stack-based Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2009-0927	High	8.8	97%	KEV	Fix
CVE-2020-10924	High	8.8	87%	-	-
CVE-2022-20705	Critical	10.0	80%	-	-

Common questions

How do I fix CVE-2021-32941?

Upgrade n48pbb firmware to 3.4.106 or later.

Is CVE-2021-32941 being actively exploited?

Not that we know of. CVE-2021-32941 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 14.6% is the estimated probability that it will be exploited in the next 30 days. That is higher than 96% of all scored CVEs.

How severe is CVE-2021-32941?

CVE-2021-32941 has a CVSS v3 base score of 9.4, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2021-32941 affect?

Published advisories record a fix for n48pbb firmware (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.