Vulnerability · Published Aug 27, 2026 · Assigned by wibu
CVE-2026-81575Missing Sanity Checks for Buffer Lengths
High 7.5
In plain English
A high-severity security flaw in codemeter-runtime from wibu-systems-ag. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 59.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| wibu-systems-ag | codemeter-runtime | 9.00 – before 9.108.00 – before 8.41a |
Weakness: CWE-130 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H