CVE-2026-41703: VMware ESX · Out-of-bounds Read
Affects VMware ESXSource CVE Database V5
Not known to be exploited · CVSS 7.6 High · fixed in 5.2.3 : patch VMware ESX soon.
Data as of 29 Oct 2026, 07:15 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 37% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 5.2.3, ESXi80U3i-25205845, ESXi-9.1.0.0-25370933 +2
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:LExploitation evidence
Disclosed: evidence found.
CVE published 30 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Upgrade ESX to ESXi80U3i-25205845, ESXi-9.1.0.0-25370933 or ESXi-9.0.2.0100-25595025; Cloud Foundation to 5.2.3; Workstation and Fusion to 26H1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| VMwareCloud Foundation | Affected
| Fixed in
|
| VMwarevSphere Foundation | Affected
| Fixed in– |
| VMwareESX | Affected
| Fixed in
|
| VMwareWorkstation | Affected
| Fixed in
|
| VMwareFusion | Affected
| Fixed in
|
| VMwareTelco Cloud Platform | Affected
| Fixed in– |
AI-suggested
Restricting VM deployment privileges to trusted administrators may reduce risk.
Description
CVE-2026-41703 is an out-of-bounds read vulnerability in VMware ESX, Workstation, and Fusion. A malicious actor with VM deployment privileges could exploit this to cause information disclosure or a denial-of-service (DoS) condition. The impact on Workstation and Fusion is limited to information disclosure, while on ESX it may lead to DoS of the host process. The vulnerability affects VMware Cloud Foundation versions 5.x, 9.0.x.x, and 9.1.x.x.