CVE-2018-15586

MEDIUMNVD 6.56.5—

6.5

Enigmail before 2.0.6 is prone to to OpenPGP signatures being spoofed for arbitrary messages using a PGP/INLINE signature wrapped within a specially crafted multipart HTML email.

CVSS v3: 6.5
EG Score: 6.5(medium)
EPSS: 48.9%
KEV: Not listed

Published

February 11, 2019

Last Modified

November 21, 2024

References (12)

cve@mitrehttp://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html
cve@mitrehttp://seclists.org/fulldisclosure/2019/Apr/38
cve@mitrehttp://www.openwall.com/lists/oss-security/2019/04/30/4
cve@mitrehttps://github.com/RUB-NDS/Johnny-You-Are-Fired
cve@mitrehttps://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf
cve@mitrehttps://sourceforge.net/p/enigmail/bugs/849/
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2019/Apr/38
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2019/04/30/4
af854a3a-2127-422b-91ae-364da2661108https://github.com/RUB-NDS/Johnny-You-Are-Fired
af854a3a-2127-422b-91ae-364da2661108https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf
af854a3a-2127-422b-91ae-364da2661108https://sourceforge.net/p/enigmail/bugs/849/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-347Improper Verification of Cryptographic Signature

Data Freshness Timeline

(refreshed 10× in last 7d / 18× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:28 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-23 02:49 UTCEG score recompute
2026-05-23 02:49 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2018-15586?

CVE-2018-15586 is a medium vulnerability published on February 11, 2019. Enigmail before 2.0.6 is prone to to OpenPGP signatures being spoofed for arbitrary messages using a PGP/INLINE signature wrapped within a specially crafted multipart HTML email.

When was CVE-2018-15586 disclosed?

CVE-2018-15586 was first published in the National Vulnerability Database on February 11, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2018-15586 actively exploited?

CVE-2018-15586 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 48.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-15586?

CVE-2018-15586 has a CVSS v3 base score of 6.5 (NVD).

How do I remediate CVE-2018-15586?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-15586, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2018-15586

📅 Published

🔄 Last Modified

🔗 References (12)