CVE-2023-50313

Outbound TLS disclosure via ignored security configuration

Published Apr 2, 2024 · Updated Aug 2, 2024

Weak outbound TLS handling in IBM WebSphere Application Server 8.5 and 9.0 allows adjacent attackers to read protected data. The outbound TLS connection path fails to honor administrator-selected security settings and can instead use weaker cryptographic protection. Exploitation requires a network-adjacent position and a configured outbound TLS connection; the reported consequence is confidentiality loss only.

CVSS severity5.3
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Weak outbound TLS handling in IBM WebSphere Application Server 8.5 and 9.0 allows adjacent attackers to read protected data. The outbound TLS connection path fails to honor administrator-selected security settings and can instead use weaker cryptographic protection. Exploitation requires a network-adjacent position and a configured outbound TLS connection; the reported consequence is confidentiality loss only.

The record

CVE
CVE-2023-50313
Published
Apr 2, 2024
Updated
Aug 2, 2024
Vendor
IBM
Product
IBM WebSphere Application Server
Classifications
CWE-327, T1557
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=8.5, 9.0

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

IBM · IBM WebSphere Application Serverversion=8.5, 9.0

Published CVSS scores

5.3IBM CorporationCVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
6.5NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/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-327Use of a Broken or Risky Cryptographic Algorithm
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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