CVE-2026-60109

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Source
https://cve.org/CVERecord?id=CVE-2026-60109
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-60109.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-60109
Published
2026-07-09T14:19:17.970Z
Modified
2026-07-16T03:31:09.250708523Z
Severity
  • 8.7 (High) CVSS_V4 - 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 CVSS Calculator
Summary
Zeek < 8.0.9 Null Pointer Dereference DoS via Kerberos KRB_ERROR Parsing
Details

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 KRBERROR message with error-code 25 (KDCERRPREAUTHREQUIRED) containing a PA-DATA element with padata-type 2, 3, 11, or 19. Attackers can exploit a parser and analyzer state mismatch where procpadata() dereferences an uninitialized padata_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.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-476"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/60xxx/CVE-2026-60109.json"
}
References

Affected packages

Git / github.com/zeek/zeek

Affected ranges

Type
GIT
Repo
https://github.com/zeek/zeek
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
9abee105a8259b65e350d57b68d03c6db00fe3a8
Fixed
c82e3c734893d932e94310aec0dbeb1ffcea169d
Database specific 
{
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ],
    "cpe": "cpe:2.3:a:zeek:zeek:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "8.0.9"
        }
    ]
}

Affected versions

Other
beta
lts
release
v1.*
v1.1
v1.6-dev
v2.*
v2.0
v2.0-beta
v2.0-beta-pre
v2.1
v2.1-beta
v2.2
v2.2-beta
v2.3
v2.3-beta
v2.4
v2.4-beta
v2.5
v2.5-beta
v2.5-beta2
v2.6
v2.6-beta2
v2.6-beta3
v3.*
v3.1.0-dev
v3.2.0-dev
v3.3.0-dev
v4.*
v4.1.0-dev
v4.2.0-dev
v5.*
v5.0.0-dev
v5.1.0-dev
v5.2.0-dev
v6.*
v6.0.0-dev
v6.1.0-dev
v6.2.0-dev
v7.*
v7.0.0-dev
v7.1.0-dev
v7.2.0-dev
v8.*
v8.0.0
v8.0.0-dev
v8.0.0-rc1
v8.0.0-rc2
v8.0.1
v8.0.2
v8.0.3
v8.0.4
v8.0.5
v8.0.6
v8.0.7
v8.0.8

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-60109.json"