CVE-2026-81573 Improper Access Control in Local-Only Configuration Commands
Remote attackers can bypass access controls to read sensitive configuration data and take over the WebAdmin interface in CodeMeter Runtime server mode.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-81573?
CVE-2026-81573 is a high-severity missing authorization vulnerability in wibu-systems-ag codemeter-runtime, published on 27 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
If CodeMeter Runtime before 8.41a or 9.10 is configured as a server, the configuration command handler does not enforce network- origin restrictions. Commands intended only for local or same-network clients can therefore be executed by arbitrary remote peers. An attacker can read potentially sensitive configuration data and overwrite selected values in Server.ini. This does include the hash of the credentials for the CodeMeter WebAdmin, enabling WebAdmin takeover.
Weakness: CWE-284
Which versions are affected by CVE-2026-81573?
How do I fix CVE-2026-81573?
No fix has been published for CVE-2026-81573 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-81573 being exploited?
There is no known exploitation of CVE-2026-81573 in the wild and no public exploit code.
Sources
Also known as GHSA-4vcw-h879-447q.