CVE-2026-16107Network attack vector

Sensitive-data interception via unvalidated server certificates

Published Jul 28, 2026 · Updated Jul 28, 2026

Improper certificate validation in IBM TS4500 CLI tool 0.1.31 through 1.12.0.0 allows man-in-the-middle attackers to read sensitive data. The client's SSL configuration fails to authenticate the library server certificate during TLS connection setup. Exploitation requires a network position between the CLI host and library, and the reported consequence is interception of confidential communications rather than data modification or service interruption.

CVSS severity5.9
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper certificate validation in IBM TS4500 CLI tool 0.1.31 through 1.12.0.0 allows man-in-the-middle attackers to read sensitive data. The client's SSL configuration fails to authenticate the library server certificate during TLS connection setup. Exploitation requires a network position between the CLI host and library, and the reported consequence is interception of confidential communications rather than data modification or service interruption.

The record

CVE
CVE-2026-16107
Published
Jul 28, 2026
Updated
Jul 28, 2026
Vendor
OpenBMC Project
Product
IBM TS4500 CLI tool
Classifications
CWE-295, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 28, 2026Record 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=Versions:  0.1.31 <=1.12.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenBMC Project · IBM TS4500 CLI toolversion=Versions:  0.1.31 <=1.12.0.0

Published CVSS scores

5.9IBMCVSS:3.1/AV:N/AC:H/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.

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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-295Improper Certificate Validation
T1557Adversary-in-the-Middle

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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