Heap memory corruption via oversized KSL digest name
Published Oct 1, 2026 · Updated Oct 1, 2026
Heap buffer overflow in Fortra Core Privileged Access Manager (BoKS) allows remote authenticated users to corrupt server memory. The boks_ksllogsd service accepts a checksum name in a KSL start message, checks whether OpenSSL recognizes it, then copies it into a fixed 16-byte context field without checking its length. A valid KSL client session is required; the supplied evidence establishes an out-of-bounds write, not code execution or a confirmed service crash.
Summary
What happened
Heap buffer overflow in Fortra Core Privileged Access Manager (BoKS) allows remote authenticated users to corrupt server memory. The boks_ksllogsd service accepts a checksum name in a KSL start message, checks whether OpenSSL recognizes it, then copies it into a fixed 16-byte context field without checking its length. A valid KSL client session is required; the supplied evidence establishes an out-of-bounds write, not code execution or a confirmed service crash.
The record
- CVE
- CVE-2026-79900
- Published
- Oct 1, 2026
- Updated
- Oct 1, 2026
- Vendor
- Fortra
- Product
- Core Privileged Access Manager (BoKS)
- Classifications
- Unavailable
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 1, 2026CVE publishedPublication date reported by the CVE source.
- Oct 1, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <8.1.0.24
- Affected versionversion=0 <9.0.0.7
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Activity data is delayed. The latest report is Sep 28, 2026.
Weakness, pattern, technique
No sourced classifications are available.
Public exploit references
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Technologies
Your stack
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Your stack
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