What is CVE-2026-81574?

CVE-2026-81574 is a high-severity vulnerability, classified under Use of Externally-Controlled Format String. CVSS score: 8.2/10. Published 2026-08-27.

How severe is CVE-2026-81574?

High severity. CVSS v3 base score is 8.2 out of 10.

CVE-2026-81574

CVE-2026-81574

In CodeMeter Runtime before versions 8.41a and 9.10, the logger does not sanitize input strings in certain cases, allowing an attacker to inject printf-style format specifiers. This can be used to reliably crash CodeMeter and disclose sensitive information such as process memory and stack canaries. The attack works locally, for example by using cmu --set-proxy to set the proxy value, and remotely when combined with CVE-2026-81573 by setting General.ProxyServer and then triggering this vulnerability.

EPSS: 0.004 (33.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H.

Weakness classification (CWE)

CWE-134 — Use of Externally-Controlled Format String

References

2fc02b1f-71e7-4514-a878-169626f68903 (vendor-advisory)

Frequently asked questions

What is CVE-2026-81574?: CVE-2026-81574 is a high-severity vulnerability, classified under Use of Externally-Controlled Format String. CVSS score: 8.2/10. Published 2026-08-27.
How severe is CVE-2026-81574?: High severity. CVSS v3 base score is 8.2 out of 10.