Missing Sanity Checks for Buffer Lengths
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| wibu-systems-ag | codemeter-runtime | 9.00 to before 9.10; 8.00 to before 8.41a | 9.10, 8.41a, 7.00, 6.00 | Patch available | CNA |
- codemeter-runtime Vendorwibu-systems-ag Affected 9.00 to before 9.10; 8.00 to before 8.41a Fixed in 9.10, 8.41a, 7.00, 6.00 Patch available CNA
Remediation
- Fix · CNA codemeter-runtime (wibu-systems-ag) Fixed in 9.10, 8.41a, 7.00, 6.00
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
wibu-systems-ag codemeter-runtime — cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/A…
4 records Highest priority Priority MEDIUM 2 MEDIUM, 2 LOW
Other records, highest priority first
- TI-2026-56280 Improper Access Control in Local-Only Configuration CommandsPriority MEDIUM 43
- TI-2026-56281 Format String Vulnerability in LoggerPriority MEDIUM 42
- TI-2026-56283 Improper Authentication of Session HandlesPriority LOW 34
Timeline
- 2026-10-02 Threatist record created from CVE-2026-81575
- 2026-10-03 Alias added: GHSA-ccvp-8vxx-4m3m
References
More wibu-systems-ag vulnerabilities
- TI-2026-56280 Improper Access Control in Local-Only Configuration Commands CVSS 3.1HIGH 8.6
- TI-2026-56281 Format String Vulnerability in Logger CVSS 3.1HIGH 8.2
- TI-2026-56286 Memory corruption in wibu-systems-ag wibukey CVSS 3.1HIGH 8.8
- TI-2026-56285 An untrusted Pointer Dereference can be exploited to escalate privileges by an unprivileged user on Windows CVSS 3.1HIGH 8.8
- TI-2026-56279 Local Privilege Escalation in CodeMeter Runtime on Windows CVSS 3.1HIGH 7.8
- TI-2026-56283 Improper Authentication of Session Handles CVSS 3.1HIGH 7.7
Sources
- CVE-2026-81575 · CVE Program
- CVE-2026-81575 · NVD
- FIRST EPSS
- GHSA-ccvp-8vxx-4m3m · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences