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Vulnerability record · CVE-2026-66141 · published 24 July 2026

CVE-2026-66141: Exim inclusion from untrusted sphere vulnerability

Exim · Exim

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

7.8 CVSS 3.1 High EPSS 0.14% · top 97.1% CWE-829 · Inclusion from untrusted sphere
7.8CVSS 3.1 base score
0.14%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Aug 2026Last modified by NVD

Description

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

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://openwall.com/lists/oss-security/2026/07/22/9 Mailing ListThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-66141), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.