#VU106059 Use-after-free in Exim - CVE-2025-30232

Vulnerability identifier: #VU106059

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-30232

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Exim
Server applications / Mail servers

Vendor: Exim

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the handling of the dp command line parameter. A local user with command-line access can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Exim: 4.96 - 4.98.1

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External links
https://www.exim.org/static/doc/security/CVE-2025-30232.txt
https://www.zerodayinitiative.com/advisories/ZDI-25-200/

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.