9.8

CVE-2023-20895: vmware vcenter_server Out-of-bounds Write

CVSS: 9.8v3.1CriticalModified
Published 22-06-2023Last modified 13-02-2025
Open JSON

Vulnerability summary

CVE-2023-20895 is a critical (CVSS 9.8) Out-of-bounds Write vulnerability in vmware vcenter_server. EPSS estimates a 1.38% chance of exploitation in the next 30 days, higher than 71.7% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
1.38%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 22-06-2023
    PublishedVulnerability first disclosed.
  2. 13-02-2025
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

1.38%

Chance of exploitation in the next 30 days

Percentile

72%

Versus all other CVEs

30-day change

0.00 pp

From 1.38% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.38%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Vmware3 products
  • vcenter_serverEOL< 7.0 | 7.0 | 7.0:a | 7.0:b | 7.0:c | 7.0:d | 7.0:update1 | 7.0:update1a | 7.0:update1c | 7.0:update1d | 7.0:update2 | 7.0:update2a | 7.0:update2b | 7.0:update2c | 7.0:update2d | 7.0:update3 | 7.0:update3a | 7.0:update3c | 7.0:update3d | 7.0:update3e | 7.0:update3f | 7.0:update3g | 7.0:update3h | 7.0:update3i | 7.0:update3j | 7.0:update3k | 7.0:update3l | 8.0 | 8.0:a | 8.0:b | 8.0:c | 8.0:update1 | 8.0:update1a
  • vmware cloud foundation (vcenter server)≥ 5.x, < 7.0 U3m, 8.0 U1b | ≥ 4.x, < 7.0 U3m, 8.0 U1b
  • vmware vcenter server (vcenter server)≥ 8.0, < 8.0 U1b | ≥ 7.0, < 7.0 u3m

1 vendor · 3 products

References

2 links