CVE-2023-2820

Credential disclosure via interceptable faye session traffic

Published Jun 14, 2023 · Updated Dec 27, 2024

Information disclosure in Proofpoint Threat Response Auto-Pull before 5.10.0 allows attackers on an adjacent network to obtain service credentials. Proofpoint identifies the faye endpoint and interceptable session traffic but has not disclosed the endpoint operation or cryptographic weakness that exposes the credentials. Exploitation requires a man-in-the-middle position or successful cryptanalysis, and the recovered credentials permit impersonation of PTR/TRAP to integrated services.

CVSS severity6.1
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Proofpoint Threat Response Auto-Pull before 5.10.0 allows attackers on an adjacent network to obtain service credentials. Proofpoint identifies the faye endpoint and interceptable session traffic but has not disclosed the endpoint operation or cryptographic weakness that exposes the credentials. Exploitation requires a man-in-the-middle position or successful cryptanalysis, and the recovered credentials permit impersonation of PTR/TRAP to integrated services.

The record

CVE
CVE-2023-2820
Published
Jun 14, 2023
Updated
Dec 27, 2024
Vendor
Proofpoint
Product
Threat Response Auto-Pull
Classifications
CWE-668, CWE-200, T1557
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 27, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <5.10.0

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Proofpoint · Threat Response Auto-Pullversion=0 <5.10.0

Published CVSS scores

6.8NIST NVDCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
6.1Proofpoint Inc.CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-668Exposure of Resource to Wrong Sphere
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1557Adversary-in-the-Middle

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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