CVE-2026-81575 Missing Sanity Checks for Buffer Lengths
A remote attacker can crash the CodeMeter Runtime server by sending malformed requests with invalid data lengths, causing a segmentation fault.
- 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-2026-81575?
CVE-2026-81575 is a high-severity denial of service 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 configured as a server, CodeMeter Runtime before versions 8.41a and 9.10 accepts requests with opcode 0x5e, which contain the data length and the data itself. Missing bounds checking on the data length value can lead to out of bounds reads, causing a segmentation fault that ultimately crashes the CodeMeter Runtime.
Weakness: CWE-130
Which versions are affected by CVE-2026-81575?
How do I fix CVE-2026-81575?
No fix has been published for CVE-2026-81575 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-81575 being exploited?
There is no known exploitation of CVE-2026-81575 in the wild and no public exploit code.
Sources
Also known as GHSA-ccvp-8vxx-4m3m.