CVE-2026-66140 PUBLISHED

Assigner: mitre
Reserved: 24.07.2026 Published: 24.07.2026 Updated: 24.07.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 8.4

Attack Vector	Local	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	Exim
Product	Exim
Versions	Default: unaffected affected from 4.88 to 4.99.5 (excl.)

References

https://openwall.com/lists/oss-security/2026/07/22/9

Problem Types

CWE-24 Path Traversal: '../filedir' CWE