This report was translated by AI; nobody has reviewed the translation yet. Original language: Czech.
[TLP:CLEAR] VMware Workstation & Fusion fix 2 vulnerabilities
Broadcom fixes 2 vulnerabilities in VMware Workstation and VMware Fusion with version 26H1u1, one of them critical [1].
A local attacker with administrative privileges on a virtual machine with a configured VMXNET3 network adapter can execute code on the host system due to an integer overflow in this component [1].
The vulnerability is present in products:
- VMware Workstation; >=25H2, <26H1u1; >=26H1, <26H1u1
- VMware Fusion; >=25H2, <26H1u1; >=26H1, <26H1u1
CVSS: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
More information:
- CVE-2026-59346 at cve.org, NVD
- CWE-190: Integer Overflow or Wraparound at cwe.mitre.org
The vulnerability was publicly disclosed 3. 9. 2026.
A local attacker with administrative privileges on a virtual machine can execute code in the context of the VMX process on the host system due to a stack overflow in the HGFS component [1].
The vulnerability is present in products:
- VMware Workstation; >=25H2, <26H1u1; >=26H1, <26H1u1
- VMware Fusion; >=25H2, <26H1u1; >=26H1, <26H1u1
CVSS: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
More information:
- CVE-2026-59347 at cve.org, NVD
- CWE-121: Stack-based Buffer Overflow at cwe.mitre.org
The vulnerability was publicly disclosed 3. 9. 2026.
By CESNET, z.s.p.o. Michaela Jarošová on 7. 9. 2026.