What is CVE-2018-12066?

CVE-2018-12066 is a medium-severity vulnerability in Bird Project, classified under Uncontrolled Resource Consumption. CVSS score: 5.5/10. Published 2018-06-08.

How severe is CVE-2018-12066?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Resource exhaustion in Bird Project

CVE-2018-12066

BIRD Internet Routing Daemon before 1.6.4 allows local users to cause a denial of service (stack consumption and daemon crash) via BGP mask expressions in birdc.

Vulnerability class: DoS (Denial of Service)

Published 2018-06-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (29.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 29.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Bird Project

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

gitlab.labs.nic.cz/labs/bird/blob/v1.6.4/NEWS (Third Party Advisory, Issue Tracking)
gitlab.labs.nic.cz/labs/bird/commit/e8bc64e308586b6502090da2775af84cd760ed0d (Patch, Third Party Advisory, Issue Tracking)
bird.network.cz (Third Party Advisory)
bugs.debian.org/cgi-bin/bugreport.cgi (Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2018-12066?: CVE-2018-12066 is a medium-severity vulnerability in Bird Project, classified under Uncontrolled Resource Consumption. CVSS score: 5.5/10. Published 2018-06-08.
How severe is CVE-2018-12066?: Medium severity. CVSS v3 base score is 5.5 out of 10.