CVE-2019-10149
Published: January 10, 2022
Official Description
Improper validation of recipient address in deliver_message() function in /src/deliver.c may lead to remote command execution.
CISA KEV Advisory
Exim Mail Transfer Agent (MTA) Improper Input Validation
Improper validation of recipient address in deliver_message() function in /src/deliver.c may lead to remote command execution.
Apply updates per vendor instructions.
Risk Analysis
An improper validation of the recipient address in the 'deliver_message()' function can lead to remote command execution. The high EPSS score of 0.93927 indicates a very high likelihood of exploitation, and its presence in CISA's KEV confirms active exploitation.
This vulnerability is actively being exploited in the wild. It is remotely exploitable.
Apply the necessary patches to address the improper validation in the 'deliver_message()' function and prevent remote command execution.
Technical Analysis
CVE-2019-10149 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2019-10149 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2019-10149 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1