CVE-2025-6170
libxml2: Stack Buffer Overflow in xmllint Interactive Shell Command Handling
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · June 16, 2025
Updated · November 2, 2026
Description
A flaw was found in the interactive shell of the xmllint command-line tool, used for parsing XML files. When a user inputs an overly long command, the program does not check the input size properly, which can cause it to crash. This issue might allow attackers to run harmful code in rare configurations without modern protections.
Statement
The Red Hat Product Security team has rated the severity of this vulnerability as Low, since it affects only the interactive shell mode of the xmllint tool and requires a user to manually run the tool and enter or receive specially crafted input. The exploitation requires local access and a highly specific usage scenario that is uncommon in typical environments. While it can cause a crash, the impact is limited to availability, and exploitation is unlikely in real-world deployments.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to a widespread installation base, or stability. It is strongly recommended to apply the upstream patch once available.
CVSS / CWE
CVSS 3.1 · 2.5CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
CWE-121 · Stack-based Buffer Overflow