PatchTheCVECVE-2018-12019: The signature verification routine in Enigmail before 2.0.7 interprets user ids as status/control messages and
CVE-2018-12019 is a high-severity flaw (CVSS 7.5) affecting enigmail. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The signature verification routine in Enigmail before 2.0.7 interprets user ids as status/control messages and does not correctly keep track of the status of multiple signatures, which allows remote attackers to spoof arbitrary email signatures via public keys containing crafted primary user ids.
Why this priority
- High severity
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 2.1% (top 19%) |
| CISA exploited list | No |
| Weakness | CWE-347 |
| Published | 2018-06-13 |
| 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-2018-12019?
enigmail: upgrade to 2.0.7. Exact commands for each OS are on this page.
Is CVE-2018-12019 being exploited?
CVE-2018-12019 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-2018-12019 affect?
CVE-2018-12019 affects enigmail. Severity is high (CVSS 7.5). The signature verification routine in Enigmail before 2.0.7 interprets user ids as status/control messages and does not correctly keep track of the status of multiple signatures, which allows remote attackers to spoof arbitrary email signat
How urgent is CVE-2018-12019?
Priority 57/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action
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