#VU122663 Stack-based buffer overflow in libsoup - CVE-2026-0719
Published: February 11, 2026
Vulnerability identifier: #VU122663
Vulnerability risk: Critical
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Red
CVE-ID: CVE-2026-0719
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
libsoup
libsoup
Software vendor:
Gnome Development Team
Gnome Development Team
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in the md4sum() function of libsoup’s NTLM authentication module (SoupAuthNTLM) when handling NTLM authentication requests. A remote attacker can send specially crafted input to the application, trigger stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.