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Fencer Vulns
high 8.1

CVE-2023-20895 json

The VMware vCenter Server contains a memory corruption vulnerability in the implementation of the DCERPC protocol.

published 2023-06-22 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-25066

cvss
8.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits
0
none known

Summary

The VMware vCenter Server contains a memory corruption vulnerability in the implementation of the DCERPC protocol. A malicious actor with network access to vCenter Server may trigger a memory corruption vulnerability which may bypass authentication.

Patch / fix

  • VMware VMware vCenter Server (vCenter Server) 7.0 u3m, 8.0 U1b
  • VMware VMware Cloud Foundation (vCenter Server) 7.0 U3m, 8.0 U1b

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
23 mo ago

Exploit prediction

1.38% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • VMware VMware vCenter Server (vCenter Server)
  • VMware VMware Cloud Foundation (vCenter Server)

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.