#VU125824 Use-after-free in cups - CVE-2026-39316
Published: April 11, 2026
Vulnerability identifier: #VU125824
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-39316
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
cups
cups
Software vendor:
OpenPrinting
OpenPrinting
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to use-after-free in cupsdDeleteTemporaryPrinters() in scheduler/printers.c when deleting temporary printers that still have subscriptions referencing them. A local user can create a temporary printer with a subscription and trigger dereference of the dangling subscription pointer to execute arbitrary code.
The dangling pointer is subsequently dereferenced at multiple code sites in the scheduler, and the advisory confirms denial of service with potential code execution through heap grooming.
Remediation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.