CVE-2021-20434

Local credential disclosure via cleartext storage

Published Sep 23, 2021 · Updated Sep 17, 2024

Insufficiently protected credentials in IBM Verify Bridge 1.0.5.0 allow local users to read stored user credentials from cleartext files. The bridge stores credentials without adequate protection in local storage, leaving them readable to a local user with high privileges. Exploitation requires local high-privilege access and exposes credential confidentiality without changing integrity or availability.

CVSS severity4.4
Medium
EPSS probability0.21%
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 IBM Verify Bridge 1.0.5.0 allow local users to read stored user credentials from cleartext files. The bridge stores credentials without adequate protection in local storage, leaving them readable to a local user with high privileges. Exploitation requires local high-privilege access and exposes credential confidentiality without changing integrity or availability.

The record

CVE
CVE-2021-20434
Published
Sep 23, 2021
Updated
Sep 17, 2024
Vendor
IBM
Product
IBM Verify Bridge
Classifications
CWE-522, T1552.001
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Sep 23, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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=1.0.5.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

IBM · IBM Verify Bridgeversion=1.0.5.0

Published CVSS scores

4.4NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
4.1IBM CorporationCVSS:3.0/AV:L/AC:H/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.

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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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-522Insufficiently Protected Credentials
T1552.001Credentials In Files

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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