VMware ESX/Workstation Fusion OOB Read: Info Disclosure/DoS
CVE-2026-41703 Published on July 30, 2026
Out-of-bounds read vulnerability
VMware ESX, Workstation, and Fusion contain an out-of-bounds read vulnerability. A malicious actor with VM deployment privileges could trigger an out-of-bounds read, potentially leading to information disclosure or more likely a Denial-of-Service (DoS) condition of the host process. On Workstation and Fusion, the impact of this vulnerability is restricted to information disclosure.
Vulnerability Analysis
CVE-2026-41703 can be exploited with network access, and requires user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity, and a small impact on availability.
Weakness Type
Out-of-bounds Read
The software reads data past the end, or before the beginning, of the intended buffer. Typically, this can allow attackers to read sensitive information from other memory locations or cause a crash. A crash can occur when the code reads a variable amount of data and assumes that a sentinel exists to stop the read operation, such as a NUL in a string. The expected sentinel might not be located in the out-of-bounds memory, causing excessive data to be read, leading to a segmentation fault or a buffer overflow. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent read operation then produces undefined or unexpected results.
Products Associated with CVE-2026-41703
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Affected Versions
VMware Cloud Foundation:- Version 9.1.x.x is affected.
- Version 9.0.x.x is affected.
- Version 5.x and below 5.2.3 is affected.
- Version 9.1.x.x is affected.
- Version 9.0.x.x is affected.
- Version 9.1.x.x and below ESXi-9.1.0.0-25370933 is affected.
- Version 9.0.x.x and below ESXi-9.0.2.0100-25595025 is affected.
- Version 8.0 and below ESXi80U3i-25205845 is affected.
- Version 25H2 and below 26H1 is affected.
- Version 25H2 and below 26H1 is affected.
- Version 5.1.x is affected.
- Version 5.0.x is affected.