SECUFOCUSNOW
Home›CVE index›CVE-2019-10149
CISA KEV · Known exploitedCritical

CVE-2019-10149

Exim Mail Transfer Agent (MTA)

A flaw was found in Exim versions 4.87 to 4.91 (inclusive). Improper validation of recipient address in deliver_message() function in /src/deliver.c may lead to remote command execution.

CVSS
9.8
EPSS
100.0%
100.0% percentile
CISA KEV
Listed
Published
2019.06.05
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability100.0%
Technical severityCVSS 9.8

Vulnerability overview

A flaw was found in Exim versions 4.87 to 4.91 (inclusive). Improper validation of recipient address in deliver_message() function in /src/deliver.c may lead to remote command execution.

Affected product and versions

Product
Exim Mail Transfer Agent (MTA)
Affected versions
4.92, >= 4.87 <= 4.91, 18.04, 18.10, 9.0
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

Apply updates per vendor instructions.

Due date: 2022.07.10
  1. 1
    Identify

    Confirm that Exim Mail Transfer Agent (MTA) and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-78
KEV added
2022.01.10
Ransomware use
미확인