CVE-2024-39746Network attack vector

Information disclosure via missing HSTS enforcement

Published Aug 22, 2024 · Updated Oct 31, 2025

Information disclosure in IBM Sterling Connect:Direct Web Services 6.0 through 6.3 allows remote attackers to intercept sensitive data. The HTTPS responses fail to properly enable HTTP Strict Transport Security, leaving clients without a policy that forces subsequent connections to use HTTPS. A man-in-the-middle position on the network path is required, and the reported consequence is disclosure of transmitted sensitive information only.

CVSS severity5.9
Medium
EPSS probability0.27%
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 IBM Sterling Connect:Direct Web Services 6.0 through 6.3 allows remote attackers to intercept sensitive data. The HTTPS responses fail to properly enable HTTP Strict Transport Security, leaving clients without a policy that forces subsequent connections to use HTTPS. A man-in-the-middle position on the network path is required, and the reported consequence is disclosure of transmitted sensitive information only.

The record

CVE
CVE-2024-39746
Published
Aug 22, 2024
Updated
Oct 31, 2025
Vendor
IBM
Product
IBM Sterling Connect:Direct Web Services
Classifications
CWE-319, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 22, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 31, 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=6.0
  2. Affected versionversion=6.1
  3. Affected versionversion=6.2
  4. Affected versionversion=6.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · IBM Sterling Connect:Direct Web Servicesversion=6.0; version=6.1; version=6.2; version=6.3

Published CVSS scores

5.9IBMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
5.9IBM CorporationCVSS: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.

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-319Cleartext Transmission of Sensitive Information
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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