TI-2019-09093 Aliases CVE-2019-12175 GHSA-m47c-xm2p-2v99

In Zeek Network Security Monitor (formerly known as Bro) before 2.6.2, a NULL pointer…

LOW 36CWE-476Published 2019-07-17 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-476.

Summary

In Zeek Network Security Monitor (formerly known as Bro) before 2.6.2, a NULL pointer dereference in the Kerberos (aka KRB) protocol parser leads to DoS because a case-type index is mishandled.

Why it matters now

EPSS 0.01411 72nd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:zeek:zeek::::::::	before 2.6.2	Vulnerable	zeek

cpe:2.3:a:zeek:zeek:*:*:*:*:*:*:*:* Versions before 2.6.2 Vulnerable ·zeek

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2019-12175
2026-10-03 Alias added: GHSA-m47c-xm2p-2v99

References

Advisory 1

https://github.com/zeek/zeek/releases/tag/v2.6.2

TI-2021-18391 An issue was discovered in zeek version 4.1.0. CVSS 3.1HIGH 8.2
TI-2026-42831 Zeek < 8.0.9 Null Pointer Dereference DoS via Kerberos KRB_ERROR Parsing CVSS 4.0HIGH 8.7
TI-2026-42830 Zeek < 8.0.9 Uncontrolled Memory Consumption DoS via FTP Analyzer CVSS 4.0HIGH 8.7

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences