What is CVE-2023-21404?

CVE-2023-21404 is a medium-severity vulnerability in Axis OS, classified under Use of Hard-coded Cryptographic Key. CVSS score: 5.3/10. Published 2023-05-08.

How severe is CVE-2023-21404?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Axis OS

CVE-2023-21404

AXIS OS 11.0.X - 11.3.x use a static RSA key in legacy LUA-components to protect Axis-specific source code. The static RSA key is not used in any other secure communication nor can it be used to compromise the device or any customer data.

Published 2023-05-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (18.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 18.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Axis OS
Axis Communications Ab OS — versions AXIS OS 11.0.X - 11.3.x

Weakness classification (CWE)

References

www.axis.com/dam/public/07/0a/20/cve-2023-21404-en-US-398426.pdf (Vendor Advisory)

Frequently asked questions

What is CVE-2023-21404?: CVE-2023-21404 is a medium-severity vulnerability in Axis OS, classified under Use of Hard-coded Cryptographic Key. CVSS score: 5.3/10. Published 2023-05-08.
How severe is CVE-2023-21404?: Medium severity. CVSS v3 base score is 5.3 out of 10.