CVE-2026-79900
BoKS Manager boks-server: Heap overflow in KSL checksum initialization
Fortra BoKS Manager boks-server
CVSS
6.5MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.24%Chance of exploitation activity in the next 30 days, higher than 13% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Description
boks_ksllogsd accepts a checksum algorithm name in the MD field of an authenticated KSL start message. Affected releases verify that OpenSSL recognizes the digest name but do not verify that the value fits in a fixed 16-byte checksum context field before copying it. An authenticated KSL client can supply an oversized, OpenSSL-recognized digest name and write beyond the end of the heap allocation.
Text from CVE List
Affected versions 2
- BoKS Manager boks-serveraffected: all versions before 8.1.0.24CVE List
- BoKS Manager boks-serveraffected: all versions before 9.0.0.7CVE List