PatchTheCVECVE-2018-12066: BIRD Internet Routing Daemon before 1.6.4 allows local users to cause a denial of service (stack consumption a
CVE-2018-12066 is a medium-severity flaw (CVSS 5.5) affecting bird. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.5 (Medium) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.4% (top 67%) |
| CISA exploited list | No |
| Weakness | CWE-400 |
| Published | 2018-06-08 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2018-12066?
bird: upgrade to 1.6.4. Exact commands for each OS are on this page.
Is CVE-2018-12066 being exploited?
CVE-2018-12066 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2018-12066 affect?
CVE-2018-12066 affects bird. Severity is medium (CVSS 5.5). 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.
How urgent is CVE-2018-12066?
Priority 28/100. No elevated risk signals yet.
Related CVEs
- CVE-2021-26928 MEDIUM 6.8 UPGRADE BIRD through 2.0.7 does not provide functionality for password authentication of BGP peers