CVE-2026-60109

7.5 Élevée

Publiée le 09/07/2026 à 17:16 · Modifiée le 24/10/2026 à 01:10 · Analysée par le NVD · Source : disclosure@vulncheck.com

Description

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_PREAUTH_REQUIRED) containing a PA-DATA element with padata-type 2, 3, 11, or 19. Attackers can exploit a parser and analyzer state mismatch where proc_padata() dereferences an uninitialized pa_data_element field selected by the wrong parsing arm, triggering a crash via a single UDP or TCP packet to port 88 without any credentials or prior authentication.

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Produits concernés

Scores CVSS

Version	Score	Source	Vecteur
4.0	8.7 Élevée	disclosure@vulncheck.com	`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X`
3.1	7.5 Élevée	disclosure@vulncheck.com	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`

Faiblesses (CWE)

CWE-476

Références

https://github.com/zeek/zeek/commit/c82e3c734893d932e94310aec0dbeb1ffcea169d Patch
https://github.com/zeek/zeek/releases/tag/v8.0.9 Release Notes
https://www.vulncheck.com/advisories/zeek-null-pointer-dereference-dos-via-kerberos-krb-error-parsing Third Party Advisory

CVE-2026-60109

Description

Produits concernés

Scores CVSS

Faiblesses (CWE)

Références

Ailleurs