CVE-2026-81576CWE-639

CVE-2026-81576

High · published August 27, 2026

CVSS v3.1
7.7
EPSS
0%
Percentile
26.3
In the wild
Unconfirmed
What it is

If configured as a server, CodeMeter Runtime before versions 8.41a and 9.10 issues handles per connection and relies on a cryptographically weak

SID as sole authenticator. An attacker can brute-force the SID, recover another session's handle number, and read

license information belonging to another handle.

The record
Technical detail
CVSS v3.1
7.7 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00340 · 26.3th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-08-27T14:16Z
References (1)
EPSS history
Timeline
  • 28 AUG 06:54Z
    EPSS moved — → 0%
    epss
  • 27 AUG 07:14Z
    Improper Authentication of Session Handles
    cvelistv5