In CodeMeter Runtime before versions 8.41a and 9.10, the logger does not sanitize input strings in certain cases, allowing an attacker to inject printf-style format
specifiers. This can be used to reliably crash CodeMeter and disclose sensitive information such as process memory
and stack canaries. The attack works locally, for example by using cmu --set-proxy to set the proxy value, and
remotely when combined with CVE-2026-81573 by setting General.ProxyServer and then triggering this
vulnerability.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 4
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Wibu-Systems-Ag Codemeter-Runtime
cpe:2.3:a:wibu-systems-ag:codemeter-runtime:*:*:*:*:*:*:*:*
|
9.00
|
9.10
|
|
Wibu-Systems-Ag Codemeter-Runtime
cpe:2.3:a:wibu-systems-ag:codemeter-runtime:*:*:*:*:*:*:*:*
|
8.00
|
8.41a
|
|
Wibu-Systems-Ag Codemeter-Runtime
cpe:2.3:a:wibu-systems-ag:codemeter-runtime:7.00:*:*:*:*:*:*:*
|
— | — |
|
Wibu-Systems-Ag Codemeter-Runtime
cpe:2.3:a:wibu-systems-ag:codemeter-runtime:6.00:*:*:*:*:*:*:*
|
— | — |