CVE-2021-20498Network attack vector

Unauthenticated version disclosure via HTTP requests

Published Jul 15, 2021 · Updated Sep 17, 2024

Information disclosure in IBM Security Verify Access Docker 10.0.0 allows remote attackers to obtain version data through HTTP requests. IBM states only that HTTP requests expose the version; it does not identify the responsible handler, header, or response field. No authentication or user interaction is required, and the disclosed build data supports follow-on targeting without directly altering data or service availability.

CVSS severity5.3
Medium
EPSS probability0.94%
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 Security Verify Access Docker 10.0.0 allows remote attackers to obtain version data through HTTP requests. IBM states only that HTTP requests expose the version; it does not identify the responsible handler, header, or response field. No authentication or user interaction is required, and the disclosed build data supports follow-on targeting without directly altering data or service availability.

The record

CVE
CVE-2021-20498
Published
Jul 15, 2021
Updated
Sep 17, 2024
Vendor
IBM
Product
IBM Security Verify Access Docker
Classifications
T1592.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 15, 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=10.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · IBM Security Verify Access Dockerversion=10.0.0

Published CVSS scores

5.3IBMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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

T1592.002Gather Victim Host Information: Software

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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