CVE-2026-66140
CVSS v3
8.4
HIGH
EPSS Score
0.4 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2026-07-24
- Last Modified
- 2026-07-24
Frequently asked questions
What is 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.
Is CVE-2026-66140 actively exploited?
Active exploitation of CVE-2026-66140 has not been confirmed. Its EPSS score was 0.4% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2026-66140?
CVE-2026-66140 has a CVSS v3 base score of 8.4 (HIGH severity).
Is CVE-2026-66140 affecting your environment?
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