Axis Communications OS up to 12.11.30 ACAP Framework toctou

Summaryinfo

A vulnerability, which was classified as very critical, was found in Axis Communications OS up to 12.11.30. The affected element is an unknown function of the component ACAP Framework. Such manipulation leads to toctou. This vulnerability is listed as CVE-2026-5303. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Axis Communications OS up to 12.11.30. It has been rated as very critical. Affected by this issue is some unknown functionality of the component ACAP Framework. The manipulation with an unknown input leads to a toctou vulnerability. Using CWE to declare the problem leads to CWE-367. The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The ACAP framework contains a Time-of-Check to Time-of-Use (TOCTOU) race condition, which could potentially lead to privilege escalation. This vulnerability can only be exploited if the Axis device is configured to allow the installation of unsigned ACAP applications, and if an attacker convinces the victim to install a malicious ACAP application.

The advisory is available at axis.com. This vulnerability is handled as CVE-2026-5303 since 04/01/2026. The exploitation is known to be easy. The attack may be launched remotely. Additional levels of successful authentication are necessary for exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/11/2026).

Upgrading to version 12.11.31 eliminates this vulnerability.

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Productinfo

Vendor

• Axis Communications

Name

• OS

Version

• 12.11.0
• 12.11.1
• 12.11.2
• 12.11.3
• 12.11.4
• 12.11.5
• 12.11.6
• 12.11.7
• 12.11.8
• 12.11.9
• 12.11.10
• 12.11.11
• 12.11.12
• 12.11.13
• 12.11.14
• 12.11.15
• 12.11.16
• 12.11.17
• 12.11.18
• 12.11.19
• 12.11.20
• 12.11.21
• 12.11.22
• 12.11.23
• 12.11.24
• 12.11.25
• 12.11.26
• 12.11.27
• 12.11.28
• 12.11.29
• 12.11.30

License

• free

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CPE 2.2info

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