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VulnerabilityPublished

CVE-2026-41703: VMware ESX · Out-of-bounds Read

Affects VMware ESXSource CVE Database V5

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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

CVSS 3.1 base score
7.6High
How severe the flaw is on the 0–10 CVSS scale.
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:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 30 Jul 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
VMwareCloud FoundationAffected
  • >=5.x <5.2.3
  • =9.1.x.x
  • =9.0.x.x
Fixed in
  • 5.2.3
VMwarevSphere FoundationAffected
  • =9.1.x.x
  • =9.0.x.x
Fixed in–
VMwareESXAffected
  • =9.1.x.x
  • =9.0.x.x
  • =8.0
Fixed in
  • ESXi80U3i-25205845
  • ESXi-9.1.0.0-25370933
  • ESXi-9.0.2.0100-25595025
VMwareWorkstationAffected
  • >=25H2 <26H1
Fixed in
  • 26H1
VMwareFusionAffected
  • >=25H2 <26H1
Fixed in
  • 26H1
VMwareTelco Cloud PlatformAffected
  • =>=5.1.0 <5.2.0
  • =>=5.0.0 <5.1.0
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.

References

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