Is CVE-2023-21406 actively exploited?

No active exploitation of CVE-2023-21406 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-21406 be exploited remotely?

Partially. CVE-2023-21406 requires adjacent network access (same network segment) to exploit.

What is the CVSS score of CVE-2023-21406?

CVE-2023-21406 has a CVSS score of 8.8 (HIGH).

HOME VULNERABILITIESCVE-2023-21406

HIGH

CVE-2023-21406

CWE-122Published: July 25, 2023· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

Ariel Harush and Roy Hodir from OTORIO have found a flaw in the AXIS A1001 when

communicating over OSDP. A heap-based buffer overflow was found in the pacsiod process which

is handling the OSDP communication allowing to write outside of the allocated buffer. By

appending invalid data to an OSDP message it was possible to write data beyond the heap

allocated buffer. The data written outside the buffer could be used to execute arbitrary code.

lease refer to the Axis security advisory for more information, mitigation and affected products and software versions.

NVD Source

Technical Analysis

CVE-2023-21406 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.