CVE-2026-112256 OpenText Advanced Authentication Server - Broken Access Control

OpenText Advanced Authentication Server 6.4.0.0 through 6.4.3.8, 6.5.0.0 through 6.5.0.10, and 6.6.0.0 through 6.6.1.0 contains an access control vulnerability caused by acceptance of extraneous untrusted data with trusted data, letting attackers access functionality not properly constrained by ACLs, exploit requires no special conditions.

CVSS base score 9.2 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.24% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Privilege Escalation
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:C/RE:M/U:Red
Published
29 October 2026
Updated
31 October 2026
Weakness
CWE-349

Vendor fix

Update to a version later than 6.6.1.0 or the latest available version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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