#VU112888 Use-after-free in pycares - CVE-2025-48945
Published: July 14, 2025
Vulnerability identifier: #VU112888
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-48945
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
pycares
pycares
Software vendor:
saghul
saghul
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error caused by improper handling of callback references when the Channel object is destroyed. A remote attacker can send specially crafted DNS queries to the affected application and perform a denial of service attack.
Remediation
Install updates from vendor's website.