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Findings

CVE-2019-10149

Exim Mail Transfer Agent (MTA) Improper Input Validation

Published Jun 5, 2019 · updated Jun 16, 2026 · exim exim

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.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 5, 2019 · Catalog

    Detected

    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.

  2. Jan 10, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Jul 10, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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.

Required action

Apply updates per vendor instructions.

CISA due date Jul 10, 2022

Affected

  • cpe canonical/ubuntu linux18.04
  • cpe canonical/ubuntu linux18.10
  • cpe debian/debian linux9.0
  • cpe exim/eximversion unspecified
  • vendor Exim Mail Transfer Agent (MTA)version unspecified

Sources

  • CISA KEVConfirmed exploitationCVE-2019-10149

    Improper validation of recipient address in deliver_message() function in /src/deliver.c may lead to remote command execution.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2019-10149

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2019-10149

    30-day exploitation probability 100.0%

    first.org
  • Exploit DatabasePublic exploit reference46996

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Exploit DatabasePublic exploit reference47307

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Metasploit ModulesPublic exploit moduleexploit_linux/local/exim4_deliver_message_priv_esc

    Public module reference (excellent). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDVulnerability recordCVE-2019-10149

    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.

    nvd.nist.gov
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/153218/Exim-4.9.1-Remote-Command-Execution.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/153312/Exim-4.91-Local-Privilege-Escalation.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/154198/Exim-4.91-Local-Privilege-Escalation.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com

References