CVE-2026-16487

HIGH CVSS 3.1: 8.1 EPSS 0.17%
Updated Oct 19, 2026
Red Hat
Parameter Value
CVSS 8.1 (HIGH)
Type CWE-345 (Insufficient Verification of Data)
Vendor Red Hat
Public PoC No

A flaw was found in bootc when operating with the default containers signature policy. Automatic or manual upgrades of a mutable image tag may apply unsigned content for registries that fall through to insecureAcceptAnything, allowing an attacker who can update that tag to execute arbitrary OS content as the host root filesystem on reboot.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products

red hat:red hat enterprise linux 9 red hat:red hat hardened images red hat:red hat enterprise linux 8 red hat:red hat enterprise linux 10 red hat:red hat openshift container platform 4