CVE-2026-7374 (CVSS 9.9)

Description

A flaw was found in KubeVirt's virt-handler component. This vulnerability allows an authenticated OpenShift user with edit permissions in a single namespace to exploit improper symlink validation when connecting to virtual machine console sockets. By replacing the console socket with a symlink to the host's container runtime (CRI-O) socket, an attacker can hijack virt-handler's privileged connection. This enables the attacker to access any Unix socket on the host, potentially leading to full control of the node and the entire cluster.

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CVSS v3.1 Score

9.9

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0054

Probability of exploitation

0.41%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-59 CWE-59

References

Other References

https://access.redhat.com/errata/RHSA-2026:20720 https://access.redhat.com/errata/RHSA-2026:20736 https://access.redhat.com/errata/RHSA-2026:20763 https://access.redhat.com/errata/RHSA-2026:20767 https://access.redhat.com/errata/RHSA-2026:20782 https://access.redhat.com/errata/RHSA-2026:20825 https://access.redhat.com/errata/RHSA-2026:20866 https://access.redhat.com/errata/RHSA-2026:20886 https://access.redhat.com/errata/RHSA-2026:20890 https://access.redhat.com/errata/RHSA-2026:20975

Frequently Asked Questions

What is CVE-2026-7374? +

A flaw was found in KubeVirt's virt-handler component. This vulnerability allows an authenticated OpenShift user with edit permissions in a single namespace to exploit improper symlink validation when connecting to virtual machine console sockets. By replacing the console socket with a symlink to the host's container runtime (CRI-O) socket, an attacker can hijack virt-handler's privileged connection. This enables the attacker to access any Unix socket on the host, potentially leading to full control of the node and the entire cluster. It has a CVSS v3.1 base score of 9.9 (CRITICAL).

How severe is CVE-2026-7374? +

CVE-2026-7374 has a CVSS v3.1 score of 9.9 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0054, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-7374? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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