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HIGH · 8.4

CVE-2026-66140

Exim before 4.99.5 allows directory traversal to access files outside of the spool area, and consequently gain privileges, because arguments related to queue-name are mishandled.

Vulnerability Description

Exim before 4.99.5 allows directory traversal to access files outside of the spool area, and consequently gain privileges, because arguments related to queue-name are mishandled.

CVSS Score

8.4

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
EximExim< 4.99.5

Related Weaknesses (CWE)

CWE-24

References

FAQ

What is CVE-2026-66140?

CVE-2026-66140 is a vulnerability with a CVSS score of 8.4 (HIGH). Exim before 4.99.5 allows directory traversal to access files outside of the spool area, and consequently gain privileges, because arguments related to queue-name are mishandled.

How severe is CVE-2026-66140?

CVE-2026-66140 has been rated HIGH with a CVSS base score of 8.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-66140?

Check the references section above for vendor advisories and patch information. Affected products include: Exim Exim.