Is CVE-2026-81574 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-81574 being exploited in the wild.

How severe is CVE-2026-81574?

High severity, with a CVSS score of 8.2, published 27 August 2026.

Which products and versions are affected?

Wibu-Systems CodeMeter Runtime before 8.41a and before 9.10.

Is there a fix for CVE-2026-81574?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-81574 attacked?

It is attacked over the network or with local access, in a software library.

Am I affected by CVE-2026-81574?

Check whether you run Wibu-Systems CodeMeter Runtime at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-81574: Wibu-Systems CodeMeter Runtime format string injection

CVE-2026-81574 · Severity: high · CVSS 8.2 · Published 2026-08-27

CodeMeter Runtime is a software licensing and protection service that runs on Windows, Linux, and macOS systems to manage software licenses and protect applications. A format string vulnerability in the logging component allows attackers to crash the service or leak sensitive memory contents such as stack canaries and process memory. Exploitation can occur locally via command-line tools or remotely when combined with another vulnerability, potentially compromising the integrity of protected applications and exposing confidential data.

Technologies: Wibu-Systems CodeMeter Runtime. Vendors: Wibu-Systems.

Quick answers

Is CVE-2026-81574 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-81574 being exploited in the wild.
How severe is CVE-2026-81574?: High severity, with a CVSS score of 8.2, published 27 August 2026.
Which products and versions are affected?: Wibu-Systems CodeMeter Runtime before 8.41a and before 9.10.
Is there a fix for CVE-2026-81574?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-81574 attacked?: It is attacked over the network or with local access, in a software library.
Am I affected by CVE-2026-81574?: Check whether you run Wibu-Systems CodeMeter Runtime at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is a format string injection flaw in CodeMeter Runtime's logger that fails to sanitize input strings in certain cases. Attackers can inject printf-style format specifiers to read or write memory. The attack vector includes local exploitation via the cmu --set-proxy command to set the proxy value, and remote exploitation when combined with CVE-2026-81573 by manipulating the General.ProxyServer setting. Successful exploitation allows denial of service (crash) or information disclosure (process memory and stack canaries). The vulnerability affects versions before 8.41a and 9.10; patches are available in those versions.

Affected products

Wibu-Systems CodeMeter Runtime before 8.41a and before 9.10

Timeline

2026-08-27: disclosed
2026-08-27: advisory: CVE-2026-81574 published

References

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