What is CVE-2026-60109?

CVE-2026-60109 is a high-severity vulnerability in Zeek, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-07-09.

How severe is CVE-2026-60109?

High severity. CVSS v3 base score is 7.5 out of 10.

NULL pointer dereference in Zeek

CVE-2026-60109

Zeek before 8.0.9 contains a null pointer dereference vulnerability in its Kerberos protocol analyzer that allows unauthenticated remote attackers to crash the sensor by sending a crafted KRB_ERROR message with error-code 25 (KDC_ERR_PREAU…

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Zeek — versions 0

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

disclosure@vulncheck.com (release-notes)
disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-60109?: CVE-2026-60109 is a high-severity vulnerability in Zeek, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-07-09.
How severe is CVE-2026-60109?: High severity. CVSS v3 base score is 7.5 out of 10.