Exim Mail Transfer Agent (MTA)
YES - ON THE CISA KEV LIST
CVE-2019-10149
Exim Mail Transfer Agent (MTA) Improper Input Validation
overdue since 2022-07-10
Exim: 5 entries (0.3% of all KEV entries are from this vendor); 0 added in 2026.
BOD 26-04 note: this is the date printed in the CISA catalog. A federal agency's actual deadline is set by its SSVC tier - Act (3 days), Attend (14 days), Track (60 days), or the next scheduled upgrade - counted from the KEV listing date or the date the vulnerability is identified in its environment, whichever comes first. Use the tier helper on each CVE page for your own window.
Your BOD 26-04 window (SSVC tier helper)
Your remediation window ends:
Description
Improper validation of recipient address in deliver_message() function in /src/deliver.c may lead to remote command execution.
Required action (CISA)
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2019-10149
References
Other KEV entries for this vendor: Exim
- CVE-2010-4345 - Exim (2022-03-25)
- CVE-2010-4344 - Exim (2022-03-25)
- CVE-2019-16928 - Exim Internet Mailer (2022-03-03)
- CVE-2018-6789 - Exim (2021-11-03)
Go deeper
KEV deadlines are a governance problem as much as a patching one. TrebSec's AI governance packs help small teams document, assign, and evidence exactly this work.
AI Governance Policy Pack - $79 AI Vendor Workbook - $49 Both packs bundled - $99