CVE-2026-79901: CWE-338 Use of cryptographically weak Pseudo-Random number generator (PRNG) in Fortra BoKS Manager boks-server
In deployments using BoKS keytab management, affected versions of boks_keytabmd generate Active Directory service-account passwords from a predictable pseudo-random sequence seeded with the current Unix timestamp. An attacker who knows the service principal and can estimate the password-change time can reproduce a limited candidate set and verify candidates offline.
AI Analysis
Technical Summary
The vulnerability arises from the use of a weak PRNG seeded with the current Unix timestamp in the boks_keytabmd component of Fortra BoKS Manager boks-server. This predictable password generation method allows an attacker with knowledge of the service principal and approximate password-change timing to generate and verify candidate passwords offline. This flaw affects all versions from 0 up to 9.0.0.6. The CVSS v3.1 score is 9.9, indicating critical severity with network attack vector, low attack complexity, low privileges required, no user interaction, and complete impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows an attacker to recover Active Directory service-account passwords generated by the vulnerable PRNG, leading to potential unauthorized access and full compromise of affected systems. The vulnerability impacts confidentiality, integrity, and availability of the service accounts and associated resources.
Mitigation Recommendations
No official patch or remediation information is provided in the vendor advisory or input data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, organizations should consider additional compensating controls such as monitoring for unusual authentication activity and restricting knowledge of service principal details to limit attack feasibility.
CVE-2026-79901: CWE-338 Use of cryptographically weak Pseudo-Random number generator (PRNG) in Fortra BoKS Manager boks-server
Description
In deployments using BoKS keytab management, affected versions of boks_keytabmd generate Active Directory service-account passwords from a predictable pseudo-random sequence seeded with the current Unix timestamp. An attacker who knows the service principal and can estimate the password-change time can reproduce a limited candidate set and verify candidates offline.
CVSS v3.1
Score 9.9critical
Affected software
Fortra
BoKS Manager boks-server
pkg:github/fortra/BoKS-Manager-boks-serverRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability arises from the use of a weak PRNG seeded with the current Unix timestamp in the boks_keytabmd component of Fortra BoKS Manager boks-server. This predictable password generation method allows an attacker with knowledge of the service principal and approximate password-change timing to generate and verify candidate passwords offline. This flaw affects all versions from 0 up to 9.0.0.6. The CVSS v3.1 score is 9.9, indicating critical severity with network attack vector, low attack complexity, low privileges required, no user interaction, and complete impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows an attacker to recover Active Directory service-account passwords generated by the vulnerable PRNG, leading to potential unauthorized access and full compromise of affected systems. The vulnerability impacts confidentiality, integrity, and availability of the service accounts and associated resources.
Mitigation Recommendations
No official patch or remediation information is provided in the vendor advisory or input data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, organizations should consider additional compensating controls such as monitoring for unusual authentication activity and restricting knowledge of service principal details to limit attack feasibility.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Fortra
- Date Reserved
- 2026-08-25T14:50:15.178Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6abe7482a43b0b3b89bcf3e9
Added to database: 10/01/2026, 14:56:02 UTC
Last enriched: 10/01/2026, 15:08:12 UTC
Last updated: 10/01/2026, 23:06:05 UTC
Views: 5
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