CVE-2022-31678Network attack vector

Denial of service via XML external entity

Published Oct 28, 2022 · Updated May 8, 2025

XML External Entity in VMware Cloud Foundation (NSX-V) 3.11 allows remote attackers to cause denial of service or disclose information via network requests. The affected XML parser accepts attacker-controlled external entity references without sufficient restriction, enabling entity expansion or retrieval of unintended resources. Exploitation is unauthenticated and network reachable; impact is limited to service interruption or unintended information disclosure, with no integrity impact reported.

CVSS severity9.1
Critical
EPSS probability8.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XML External Entity in VMware Cloud Foundation (NSX-V) 3.11 allows remote attackers to cause denial of service or disclose information via network requests. The affected XML parser accepts attacker-controlled external entity references without sufficient restriction, enabling entity expansion or retrieval of unintended resources. Exploitation is unauthenticated and network reachable; impact is limited to service interruption or unintended information disclosure, with no integrity impact reported.

The record

CVE
CVE-2022-31678
Published
Oct 28, 2022
Updated
May 8, 2025
Vendor
VMware
Product
VMware Cloud Foundation
Classifications
CWE-611, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 28, 2022CVE publishedPublication date reported by the CVE source.
  2. May 8, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=3.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

VMware · VMware Cloud Foundationversion=3.11

Published CVSS scores

9.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
5.3VMwareCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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