Is there a public exploit for CVE-2026-109142?

No public exploit for CVE-2026-109142 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-109142?

CVE-2026-109142 scores CVSS 8.4 (v3.1), rated high.

What does CVE-2026-109142 affect?

CVE-2026-109142 affects NLnet Labs Krill.

8.4 High

When a CA's parent lives on the same Krill server: instead of building and verifying a signed CMS message, it runs the RFC 6492…

CVE-2026-109142

When a CA's parent lives on the same Krill server: instead of building and verifying a signed CMS message, it runs the RFC 6492 provisioning exchange in-process and trusts the child identity (childhandle) that the caller put in the parent contact. Nothing checks that this child identity actually belongs to the CA making the request.

Assessment

CVSS: 8.4 (v3.1)
Severity: High
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 2 November 2026
Last updated: 2 November 2026
Affected: NLnet Labs · Krill
Assigner: NLnet Labs

CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L

At the source

EUVD (ENISA)

References

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