#VU104117 OS Command Injection in Emacs - CVE-2025-1244

Vulnerability identifier: #VU104117

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2025-1244

CWE-ID: CWE-78

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Emacs
Client/Desktop applications / Office applications

Vendor: GNU

Description

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation when handling custom "man" URI schemes. A remote attacker can trick the victim into clicking on a specially crafted URL and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Emacs: 18.59 - 30.0.93

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=2345150
https://git.savannah.gnu.org/cgit/emacs.git/commit/?id=820f0793f0b46448928905552726c1f1b999062f

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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