Out-of-bounds read in cups - #VU125820
Published: April 11, 2026 / Updated: April 17, 2026
Vulnerability identifier: #VU125820
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to out-of-bounds read in cupsdSetPrinterAttr() marker-types parsing in scheduler/printers.c when parsing marker-types attribute values that end with a trailing hyphen character. A local user can provide a specially crafted marker-types value to cause a denial of service.
Exploitation can occur through a malicious backend or a compromised printer supplying crafted IPP attributes.
Affected software
cups
Remediation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
cups - update to 2.4.17