9.9

CVE-2026-7374: Kubevirt: kubevirt virt-handler: privilege escalation and node compromise via symlink following vulnerability

Awaiting analysis
AliasesCGA-4rm9-m2p6-f3jpCGA-h765-wgfj-9w6pGHSA-7jcp-v9w4-wjmg
Published 26-05-2026Last modified 10-09-2026

Vulnerability summary

CVE-2026-7374 is a critical (CVSS 9.9) vulnerability in docker-machine-driver-harvester. EPSS estimates a 0.74% chance of exploitation in the next 30 days, higher than 54.7% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 9.9 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
9.9/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.74%
0%100%
Low · -0.09 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 4
OPENSUSE-SU-2026:21483-1SUSE-SU-2026:2400-1SUSE-SU-2026:2401-1CGA-QV62-2R4F-WR34

Timeline

  1. 26-05-2026
    PublishedVulnerability first disclosed.
  2. 10-09-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.74%

Chance of exploitation in the next 30 days

Percentile

55%

Versus all other CVEs

30-day change

Decrease -0.09 pp

From 0.83% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard7 products
  • docker-machine-driver-harvester< 1.0.6-r13
  • harvester< 1.8.1-r1
  • harvester-fips< 1.8.1-r1
  • harvester-fips-upgrade-helper< 1.8.1-r1
  • harvester-fips-webhook< 1.8.1-r1
Kubevirt.io1 product
  • kubevirt≥ 1.7.0-alpha.0, < 1.7.4 | < 1.6.6 | ≥ 1.8.0-alpha.0, < 1.8.3
Wolfi1 product
  • docker-machine-driver-harvester< 1.0.6-r13

3 vendors · 9 products

References

20 links
Show all 20 references