CVE-2023-29447

Credential capture via HTTP Basic authentication

Published Jan 10, 2024 · Updated Jun 17, 2025

Insufficiently protected credentials in PTC Kepware Server 6.14.263.0 and earlier allow attackers to capture user credentials. The web server uses HTTP Basic authentication, causing authenticated requests to transmit reusable credentials instead of using a capture-resistant scheme. An attacker must occupy an adjacent network position and induce user interaction; successful interception discloses credentials without altering data or interrupting service.

CVSS severity5.7
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficiently protected credentials in PTC Kepware Server 6.14.263.0 and earlier allow attackers to capture user credentials. The web server uses HTTP Basic authentication, causing authenticated requests to transmit reusable credentials instead of using a capture-resistant scheme. An attacker must occupy an adjacent network position and induce user interaction; successful interception discloses credentials without altering data or interrupting service.

The record

CVE
CVE-2023-29447
Published
Jan 10, 2024
Updated
Jun 17, 2025
Vendor
Kepware
Product
Kepware Server
Classifications
CWE-522, CAPEC-94, T1557
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 10, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 17, 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?

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

  1. Affected versionversion=0 <=6.14.263.0
  2. Affected versionversion=8.0 <=8.5

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Kepware · Kepware Serverversion=0 <=6.14.263.0; version=8.0 <=8.5

Published CVSS scores

5.7DragosCVSS:3.1/AV:A/AC:L/PR:N/UI:R/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-522Insufficiently Protected Credentials
CAPEC-94Man in the Middle Attack
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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