CVE-2026-79896
Fortra BoKS Manager boks_portmux TLS ClientHello out-of-bounds read vulnerability
Fortra BoKS Manager
CVSS
7.5HighExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.33%Chance of exploitation activity in the next 30 days, higher than 24% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
Description
Fortra BoKS Manager contains an out-of-bounds read vulnerability in the custom TLS ClientHello parser used by boks_portmux. A remote unauthenticated attacker can submit a malformed ClientHello and terminate boks_portmux. Although the daemon is normally restarted automatically, repeated requests can sustain the service interruption.
Text from CVE List
Affected versions 2
- BoKS Manageraffected: 8.1.0.0 through 8.1.0.23CVE List
- BoKS Manageraffected: 9.0.0.0 through 9.0.0.6CVE List