Use After Free in Exim

CVE-2025-30232

A use-after-free in Exim 4.96 through 4.98.1 could allow users (with command-line access) to escalate privileges.

Vulnerability class: Use-After-Free

EPSS: 0.001 (27.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Exim — versions 4.96

Weakness classification (CWE)

CWE-416 — Use After Free

Public proof-of-concept exploits

References

www.exim.org/static/doc/security/CVE-2025-30232.txt

Frequently asked questions

What is CVE-2025-30232?: CVE-2025-30232 is a high-severity vulnerability in Exim, classified under Use After Free. CVSS score: 8.1/10. Published 2025-03-27.
How severe is CVE-2025-30232?: High severity. CVSS v3 base score is 8.1 out of 10.
Is CVE-2025-30232 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.