What is CVE-2018-16807?

CVE-2018-16807 is a high-severity vulnerability in Bro, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 7.5/10. Published 2018-09-11.

How severe is CVE-2018-16807?

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

Is CVE-2018-16807 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Bro

CVE-2018-16807

In Bro through 2.5.5, there is a memory leak potentially leading to DoS in scripts/base/protocols/krb/main.bro in the Kerberos protocol parser.

Published 2018-09-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.014 (71.5th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 71.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-772 — Missing Release of Resource after Effective Lifetime

Public proof-of-concept exploits

mxmssh/manul

References

github.com/bro/bro/commit/34d0cf886ca16c665f673a299e295b2a2bc14533 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2018-16807?: CVE-2018-16807 is a high-severity vulnerability in Bro, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 7.5/10. Published 2018-09-11.
How severe is CVE-2018-16807?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2018-16807 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.