CVE-2022-31733Network attack vector

Authentication bypass via unintended application port

Published Feb 3, 2023 · Updated Mar 25, 2025

Authentication bypass in Cloud Foundry Diego 2.55.0 through 2.69.0 and CF Deployment 17.1 through 23.2.0 allows remote attackers to access apps. A second programmatically generated application port on Diego cells accepts ingress without checking for the client certificate required by the mTLS proxy port. The bypass affects deployments only when mTLS route integrity is enabled and unproxied port mappings are disabled; access is limited to whatever the exposed application permits.

CVSS severity9.1
Critical
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Cloud Foundry Diego 2.55.0 through 2.69.0 and CF Deployment 17.1 through 23.2.0 allows remote attackers to access apps. A second programmatically generated application port on Diego cells accepts ingress without checking for the client certificate required by the mTLS proxy port. The bypass affects deployments only when mTLS route integrity is enabled and unproxied port mappings are disabled; access is limited to whatever the exposed application permits.

The record

CVE
CVE-2022-31733
Published
Feb 3, 2023
Updated
Mar 25, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-295, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 3, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 25, 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

9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-295Improper Certificate Validation
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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