CVE-2025-1244: 
Emacs vulnerability analysis and mitigation

A command injection vulnerability (CVE-2025-1244) was discovered in the text editor Emacs. The flaw was publicly disclosed on February 12, 2025, and affects multiple versions of Emacs across various operating systems. The vulnerability stems from improper handling of custom "man" URI schemes, which could allow remote attackers to execute arbitrary shell commands on vulnerable systems (NVD, Red Hat).

The vulnerability has been assigned a CVSS v3.1 base score of 8.8 (HIGH) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. The flaw is classified as CWE-78 (Improper Neutralization of Special Elements used in an OS Command). The vulnerability allows for command injection through the manipulation of custom "man" URI schemes, requiring user interaction for successful exploitation (Red Hat).

If successfully exploited, this vulnerability allows attackers to execute arbitrary shell commands on the target system with the privileges of the Emacs user. This could lead to unauthorized code execution, data access, file modification, and potential system compromise. The impact affects confidentiality, integrity, and availability of the system (Red Hat).

Currently, there is no direct mitigation available without disabling core Emacs functionality. Users are advised to avoid opening or viewing untrusted files, websites, HTTP URLs, or other URI resources with Emacs to reduce the risk of successful exploitation (Red Hat).

The vulnerability was reported by Vasilij Schneidermann from CODE WHITE. Multiple Linux distributions, including Red Hat Enterprise Linux and Debian, have acknowledged the vulnerability and are working on updates (Red Hat, Debian).