How severe is CVE-2018-12019?

CVE-2018-12019 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2018-12019 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-12019?

CVE-2018-12019 affects Enigmail. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-12019?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-12019 published?

CVE-2018-12019 was published on 2018-06-13 and last updated on 2026-06-17.

CVE-2018-12019

CVE-2018-12019 is a high-severity vulnerability in Enigmail with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-347.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-347
Affected product: Enigmail
Published: 2018-06-13
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2018-12019?: 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.
How severe is CVE-2018-12019?: CVE-2018-12019 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2018-12019 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-12019?: CVE-2018-12019 affects Enigmail. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-12019?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-12019 published?: CVE-2018-12019 was published on 2018-06-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:enigmail:enigmail:*:*:*:*:*:*:*:*

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