← Vulnerability feed
Start free
Open in platform
Vulnerability record · CVE-2018-15588 · published 11 February 2019
CVE-2018-15588: Freron mailmate authentication bypass by spoofing vulnerability
Freron · Mailmate
MailMate before 1.11.3 mishandles a suspicious HTML/MIME structure in a signed/encrypted email.
7.5 CVSS 3.0 High EPSS 2.4% · top 16.3% CWE-290 · Authentication bypass by spoofing
7.5CVSS 3.0 base score, v2 5.0
2.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD
Description
MailMate before 1.11.3 mishandles a suspicious HTML/MIME structure in a signed/encrypted email.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Affected products
1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.
References
| Link | Tags |
|---|---|
| http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html | Third Party AdvisoryVDB Entry |
| http://seclists.org/fulldisclosure/2019/Apr/38 | Mailing ListThird Party Advisory |
| http://www.openwall.com/lists/oss-security/2019/04/30/4 | Mailing ListThird Party Advisory |
| https://github.com/RUB-NDS/Johnny-You-Are-Fired | |
| https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf | |
| https://updates.mailmate-app.com/release_notes | Release NotesVendor Advisory |
| http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html | Third Party AdvisoryVDB Entry |
| http://seclists.org/fulldisclosure/2019/Apr/38 | Mailing ListThird Party Advisory |
| http://www.openwall.com/lists/oss-security/2019/04/30/4 | Mailing ListThird Party Advisory |
| https://github.com/RUB-NDS/Johnny-You-Are-Fired | |
| https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf | |
| https://updates.mailmate-app.com/release_notes | Release NotesVendor Advisory |
Track CVE-2018-15588 inside VULONE
Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.
Related vulnerabilities
Same products first, then exploited flaws of the same weakness class.
5.9CVE-2020-12619Freron mailmate vulnerabilityMailMate before 1.11 automatically imported S/MIME certificates and thereby silently replaced existing ones. This allowed a man-in-the-middle attacke…EPSS 0.43%5.9CVE-2017-17688Apple mail vulnerabilityThe OpenPGP specification allows a Cipher Feedback Mode (CFB) malleability-gadget attack that can indirectly lead to plaintext exfiltration, aka EFAI…EPSS 5.5%5.9CVE-2017-176899folders nine vulnerabilityThe S/MIME specification allows a Cipher Block Chaining (CBC) malleability-gadget attack that can indirectly lead to plaintext exfiltration, aka EFAI…EPSS 4.1%6.5CVE-2023-50224TP-Link router httpd authentication bypass exposes stored credentialsThe httpd service on affected TP-Link router firmware contains an improper authentication flaw (CWE-290) that lets a network-adjacent attacker bypass…KEVEPSS 16%analysed10.0CVE-2024-54085AMI MegaRAC SPx BMC authentication bypass via Redfish Host InterfaceAMI's SPx BMC implementation contains an authentication bypass reachable remotely through the Redfish Host Interface, classified as CWE-290 (authenti…KEVEPSS 61%analysed9.8CVE-2024-4358Progress Telerik Report Server authentication bypass via spoofingTelerik Report Server 2024 Q1 (10.0.24.305) and earlier on IIS contains an authentication bypass by spoofing (CWE-290). An unauthenticated remote att…KEVEPSS 97%analysed9.8CVE-2022-24112Apache APISIX batch-requests plugin auth bypass enables RCEThe batch-requests plugin in Apache APISIX can be abused to bypass the Admin API IP restriction because a code bug defeats the check that overrides t…KEVEPSS 96%analysed9.8CVE-2022-23131Zabbix Frontend SAML SSO authentication bypass via session spoofingZabbix Frontend fails to verify the user login stored in the session when SAML SSO authentication is enabled, allowing session data to be modified. A…KEVEPSS 96%analysed
Source: NIST National Vulnerability Database (record CVE-2018-15588), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.
