CVE-2021-29728Network attack vector

Sensitive-data disclosure via hard-coded credentials

Published Aug 30, 2021 · Updated Sep 16, 2024

Hard-coded credentials in IBM Sterling Secure Proxy 2.4.3.2, 3.4.3.2, 6.0.1, and 6.0.2 allow remote authenticated users to read sensitive data. The product uses an embedded password or cryptographic key for inbound authentication, outbound component communication, or internal-data encryption, but IBM has not identified the credential, file, or function. Administrative privileges are required, and the documented impact is disclosure without data modification or service interruption.

CVSS severity4.9
Medium
EPSS probability0.99%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hard-coded credentials in IBM Sterling Secure Proxy 2.4.3.2, 3.4.3.2, 6.0.1, and 6.0.2 allow remote authenticated users to read sensitive data. The product uses an embedded password or cryptographic key for inbound authentication, outbound component communication, or internal-data encryption, but IBM has not identified the credential, file, or function. Administrative privileges are required, and the documented impact is disclosure without data modification or service interruption.

The record

CVE
CVE-2021-29728
Published
Aug 30, 2021
Updated
Sep 16, 2024
Vendor
IBM
Product
IBM Sterling Secure Proxy
Classifications
CWE-798
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 30, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=2.4.3.2
  2. Affected versionversion=3.4.3.2
  3. Affected versionversion=6.0.1
  4. Affected versionversion=6.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

IBM · IBM Sterling Secure Proxyversion=2.4.3.2; version=3.4.3.2; version=6.0.1; version=6.0.2

Published CVSS scores

4.9IBM CorporationCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
4.0NIST NVDAV:N/AC:L/Au:S/C:P/I:N/A:N
4.9NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials

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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