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Vulnerabilities
Vulnerable Software

Vulnerability Details 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_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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 39.4%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2026-60109
  • Zeek » Zeek » Version: 1.1
    cpe:2.3:a:zeek:zeek:1.1
  • Zeek » Zeek » Version: 1.5.3
    cpe:2.3:a:zeek:zeek:1.5.3
  • Zeek » Zeek » Version: 2.0
    cpe:2.3:a:zeek:zeek:2.0
  • Zeek » Zeek » Version: 2.1
    cpe:2.3:a:zeek:zeek:2.1
  • Zeek » Zeek » Version: 2.2
    cpe:2.3:a:zeek:zeek:2.2
  • Zeek » Zeek » Version: 2.3
    cpe:2.3:a:zeek:zeek:2.3
  • Zeek » Zeek » Version: 2.3.1
    cpe:2.3:a:zeek:zeek:2.3.1
  • Zeek » Zeek » Version: 2.3.2
    cpe:2.3:a:zeek:zeek:2.3.2
  • Zeek » Zeek » Version: 2.4
    cpe:2.3:a:zeek:zeek:2.4
  • Zeek » Zeek » Version: 2.4.1
    cpe:2.3:a:zeek:zeek:2.4.1
  • Zeek » Zeek » Version: 2.4.2
    cpe:2.3:a:zeek:zeek:2.4.2
  • Zeek » Zeek » Version: 2.5
    cpe:2.3:a:zeek:zeek:2.5
  • Zeek » Zeek » Version: 2.5.1
    cpe:2.3:a:zeek:zeek:2.5.1
  • Zeek » Zeek » Version: 2.5.2
    cpe:2.3:a:zeek:zeek:2.5.2
  • Zeek » Zeek » Version: 2.5.3
    cpe:2.3:a:zeek:zeek:2.5.3
  • Zeek » Zeek » Version: 2.5.4
    cpe:2.3:a:zeek:zeek:2.5.4
  • Zeek » Zeek » Version: 2.5.5
    cpe:2.3:a:zeek:zeek:2.5.5
  • Zeek » Zeek » Version: 2.6
    cpe:2.3:a:zeek:zeek:2.6
  • Zeek » Zeek » Version: 2.6.1
    cpe:2.3:a:zeek:zeek:2.6.1
  • Zeek » Zeek » Version: 2.6.2
    cpe:2.3:a:zeek:zeek:2.6.2
  • Zeek » Zeek » Version: 2.6.3
    cpe:2.3:a:zeek:zeek:2.6.3
  • Zeek » Zeek » Version: 2.6.4
    cpe:2.3:a:zeek:zeek:2.6.4
  • Zeek » Zeek » Version: 3.0.0
    cpe:2.3:a:zeek:zeek:3.0.0
  • Zeek » Zeek » Version: 3.0.1
    cpe:2.3:a:zeek:zeek:3.0.1
  • Zeek » Zeek » Version: 3.0.10
    cpe:2.3:a:zeek:zeek:3.0.10
  • Zeek » Zeek » Version: 3.0.11
    cpe:2.3:a:zeek:zeek:3.0.11
  • Zeek » Zeek » Version: 3.0.12
    cpe:2.3:a:zeek:zeek:3.0.12
  • Zeek » Zeek » Version: 3.0.13
    cpe:2.3:a:zeek:zeek:3.0.13
  • Zeek » Zeek » Version: 3.0.14
    cpe:2.3:a:zeek:zeek:3.0.14
  • Zeek » Zeek » Version: 3.0.2
    cpe:2.3:a:zeek:zeek:3.0.2
  • Zeek » Zeek » Version: 3.0.3
    cpe:2.3:a:zeek:zeek:3.0.3
  • Zeek » Zeek » Version: 3.0.4
    cpe:2.3:a:zeek:zeek:3.0.4
  • Zeek » Zeek » Version: 3.0.5
    cpe:2.3:a:zeek:zeek:3.0.5
  • Zeek » Zeek » Version: 3.0.6
    cpe:2.3:a:zeek:zeek:3.0.6
  • Zeek » Zeek » Version: 3.0.7
    cpe:2.3:a:zeek:zeek:3.0.7
  • Zeek » Zeek » Version: 3.0.8
    cpe:2.3:a:zeek:zeek:3.0.8
  • Zeek » Zeek » Version: 3.0.9
    cpe:2.3:a:zeek:zeek:3.0.9
  • Zeek » Zeek » Version: 3.1.0
    cpe:2.3:a:zeek:zeek:3.1.0
  • Zeek » Zeek » Version: 3.1.1
    cpe:2.3:a:zeek:zeek:3.1.1
  • Zeek » Zeek » Version: 3.1.2
    cpe:2.3:a:zeek:zeek:3.1.2
  • Zeek » Zeek » Version: 3.1.3
    cpe:2.3:a:zeek:zeek:3.1.3
  • Zeek » Zeek » Version: 3.1.4
    cpe:2.3:a:zeek:zeek:3.1.4
  • Zeek » Zeek » Version: 3.1.5
    cpe:2.3:a:zeek:zeek:3.1.5
  • Zeek » Zeek » Version: 3.2.0
    cpe:2.3:a:zeek:zeek:3.2.0
  • Zeek » Zeek » Version: 3.2.1
    cpe:2.3:a:zeek:zeek:3.2.1
  • Zeek » Zeek » Version: 3.2.2
    cpe:2.3:a:zeek:zeek:3.2.2
  • Zeek » Zeek » Version: 3.2.3
    cpe:2.3:a:zeek:zeek:3.2.3
  • Zeek » Zeek » Version: 3.2.4
    cpe:2.3:a:zeek:zeek:3.2.4
  • Zeek » Zeek » Version: 4.0.0
    cpe:2.3:a:zeek:zeek:4.0.0
  • Zeek » Zeek » Version: 4.0.1
    cpe:2.3:a:zeek:zeek:4.0.1
  • Zeek » Zeek » Version: 4.0.2
    cpe:2.3:a:zeek:zeek:4.0.2
  • Zeek » Zeek » Version: 4.0.3
    cpe:2.3:a:zeek:zeek:4.0.3
  • Zeek » Zeek » Version: 4.0.4
    cpe:2.3:a:zeek:zeek:4.0.4
  • Zeek » Zeek » Version: 4.1.0
    cpe:2.3:a:zeek:zeek:4.1.0
  • Zeek » Zeek » Version: 4.1.1
    cpe:2.3:a:zeek:zeek:4.1.1


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