CVE-2026-81576: high-severity vulnerability in wibu-systems-ag codemeter-runtime
Improper Authentication of Session Handles
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.7epss 0.3%
If configured as a server, CodeMeter Runtime before versions 8.41a and 9.10 issues handles per connection and relies on a cryptographically weak
SID as sole authenticator. An attacker can brute-force the SID, recover another session's handle number, and read
license information belonging to another handle.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Affected products
wibu-systems-ag · codemeter-runtimeRelated CVEs — wibu-systems-ag codemeter-runtime
In the same product, most dangerous first.
CVE-2026-81575HIGHMissing Sanity Checks for Buffer LengthsEPSS 0.5%CVE-2026-81574HIGHFormat String Vulnerability in LoggerEPSS 0.4%CVE-2026-81573HIGHImproper Access Control in Local-Only Configuration CommandsEPSS 0.4%CVE-2026-81572HIGHLocal Privilege Escalation in CodeMeter Runtime on WindowsEPSS 0.2%