CVE-2023-21416

Name: CVE-2023-21416
Creator: NVD / NIST
Published: 2023-11-21T07:15:08.89+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.67%

Last modified Jun 17, 2026

CVE-2023-21416 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Sandro Poppi, member of the AXIS OS Bug Bounty Program, has found that the VAPIX API dynamicoverlay.cgi was vulnerable to a Denial-of-Service attack allowing for an attacker to block access to the overlay configuration page in the web interface of the Axis device. This flaw can only be exploited after authenticating with an operator- or administrator-privileged service account however the impact is equal. EPSS estimates a 0.67% chance of exploitation in the next 30 days.

Description

Sandro Poppi, member of the AXIS OS Bug Bounty Program, has found that the VAPIX API dynamicoverlay.cgi was vulnerable to a Denial-of-Service attack allowing for an attacker to block access to the overlay configuration page in the web interface of the Axis device. This flaw can only be exploited after authenticating with an operator- or administrator-privileged service account however the impact is equal. Axis has released patched AXIS OS versions for the highlighted flaw. Please refer to the Axis security advisory for more information and solution.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.67%

47.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-35

Affected Software

Vendor	Product	Versions
Axis	Axis Os	< 11.7.57
Axis	Axis Os 2022	< 10.12.213

References

https://www.axis.com/dam/public/35/2a/a6/cve-2023-21416-en-US-417790.pdfVendor Advisory
https://www.axis.com/dam/public/35/2a/a6/cve-2023-21416-en-US-417790.pdfVendor Advisory

Timeline

Published: Nov 21, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-21416?

How severe is CVE-2023-21416?

CVE-2023-21416 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.67% probability of exploitation in the next 30 days.

How do I fix CVE-2023-21416?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-21416?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST