CVE-2026-81574

Format String Vulnerability in Logger

HIGH
8.2
CVSS Score
Published: August 27, 2026 at 07:11 AM UTC
Updated: September 1, 2026 at 09:11 PM UTC
1 product affected across 1 vendorCodeMeter Runtime

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Severity
HIGH8.2
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

8.00 ≤ v < 8.41a9.00 ≤ v < 9.107.008.009.00
Vendor states this is fixed in 6.00 (unaffected)
Affected range stops below 8.41a, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.10, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.2HIGHwibu
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-134

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