CVE-2026-93603

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.72% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 53.6% of scored records. A rank, not a probability.

NVD base score

10.0 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-09-22.

Red Hat severity

Critical. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-09-18 13:20Z1 MO AGO

Last updated

2026-09-22 14:25Z1 MO AGO

Reserved

2026-09-18

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

Critical (CVSS 10.0)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Weaknesses

• CWE-94Improper Control of Generation of Code ('Code Injection')Base
• CWE-653Improper Isolation or CompartmentalizationClass

Data version

5.2

Document digest

d03e4fd55c4e7b60f5704dc04a20c3de85c75a918e25f8eddb239e1858ebaa3d

• github.comGitHub Security Advisory (GHSA-j89j-5m6r-cr2q)https://github.com/patriksimek/vm2/security/advisories/GHSA-j89j-5m6r-cr2qvendor-advisory
• www.vulncheck.comVulnCheck Advisory: vm2 before 3.12.1 Sandbox Escape RCE via Non-Strict Host Functionhttps://www.vulncheck.com/advisories/vm2-before-3.12.1-sandbox-escape-rce-via-non-strict-host-functionthird-party-advisory