CVE-2022-31698Public exploitNetwork attack vector

Pre-auth service interruption via unbounded TokenParts parsing

Published Dec 13, 2022 · Updated Apr 22, 2025

Denial of service in affected VMware vCenter Server 6.5, 6.7, and 7.0 releases allows remote attackers to interrupt Content Library. The parseSecurityHeader function trusts the TokenParts HTTP header as an array size and loop bound, so a huge value consumes excessive memory and CPU. Unauthenticated access to port 443 and the /cls/resourcebundle/ handler is sufficient; exploitation causes a temporary service interruption without reported data disclosure or modification.

CVSS severity5.8
Medium
EPSS probability47.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in affected VMware vCenter Server 6.5, 6.7, and 7.0 releases allows remote attackers to interrupt Content Library. The parseSecurityHeader function trusts the TokenParts HTTP header as an array size and loop bound, so a huge value consumes excessive memory and CPU. Unauthenticated access to port 443 and the /cls/resourcebundle/ handler is sufficient; exploitation causes a temporary service interruption without reported data disclosure or modification.

The record

CVE
CVE-2022-31698
Published
Dec 13, 2022
Updated
Apr 22, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-400, CWE-834, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 13, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 22, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
5.8VMwareCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
8.6Cisco TalosCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
5.3CISA-ADPCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitPublished

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
CWE-834Excessive Iteration
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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