VMware Workstation and Fusion contain an integer-overflow vulnerability
VMware · VMware Workstation
VMware Workstation and Fusion contain an integer-overflow flaw in the VMXNET3 virtual network adapter. An attacker who already holds local administrative privileges inside a virtual machine that uses this adapter can exploit it to execute code on the host.
VMware Workstation and Fusion contain an integer-overflow vulnerability. A malicious actor with local administrative privileges on a virtual machine with VMXNET3 virtual network adapter may exploit this issue to execute code on the host. Affected versions: - VMware Workstation: 25H2, 26H1 (fixed in 26H1u1) - VMware Fusion: 25H2, 26H1 (fixed in 26H1u1)
- Exploited
- Not confirmed
- Reports
- 0
- Tactics
- 0/15
Exploitation timelineDated milestones for a CVE: when it was disclosed, when exploit code became public, when exploitation was confirmed, and when threat reports named it.
Public exploit code (PoC-in-GitHub) was available 22 days before disclosure.
- Public exploit codePoC-in-GitHub22 days before
- Disclosedday 0
MITRE ATT&CKA public catalogue of the techniques attackers use, maintained by MITRE. Patchfirst uses it to describe what attackers do with a vulnerability. techniques
No techniques linkedNo ATT&CK techniques are linked to this CVE yet. MITRE CTID has not mapped it, and no report passage in the corpus ties it to a technique.
What security researchers reported
Not named in any threat report yetAlso mentioned in 14 community threat pulses (AlienVault OTX)
Weaker evidencePulses are indicator collections that anyone can publish. A mention is not confirmation of exploitation.
- Known_Cve | Oct 16, 2026 | Part 1/315 Oct 2026
- Known_Cve | Oct 15, 2026 | Part 1/314 Oct 2026
- Known_Cve | Oct 14, 2026 | Part 1/313 Oct 2026
- Known_Cve | Oct 13, 2026 | Part 1/212 Oct 2026
- Known_Cve | Oct 12, 2026 | Part 1/211 Oct 2026
- Known_Cve | Oct 11, 2026 | Part 2/210 Oct 2026
- 8 more on OTX