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HIGH

CVE-2026-66141

CVSS v3

7.4

HIGH

EPSS Score

0.1 %

exploit probability, as of 2026-09-25

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

Exim before 4.99.5 allows .forward privilege escalation because force_command for a pipe transport is mishandled.

Technical details

Published
2026-07-24
Last Modified
2026-07-24

Frequently asked questions

What is CVE-2026-66141?

Exim before 4.99.5 allows .forward privilege escalation because force_command for a pipe transport is mishandled.

Is CVE-2026-66141 actively exploited?

Active exploitation of CVE-2026-66141 has not been confirmed. Its EPSS score was 0.1% on 2026-09-25, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-66141?

CVE-2026-66141 has a CVSS v3 base score of 7.4 (HIGH severity).

Is CVE-2026-66141 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.

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