CVE-2021-20496Network attack vector

Authenticated input-restriction bypass

Published Jul 15, 2021 · Updated Sep 16, 2024

Improper input validation in IBM Security Verify Access Docker 10.0.0 allows remote authenticated users to bypass input restrictions. IBM has not disclosed the affected component, accepted input, or validation operation that fails to reject it. Administrative privileges are required, and IBM does not identify the operation enabled after the input restriction is bypassed.

CVSS severity2.7
Low
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in IBM Security Verify Access Docker 10.0.0 allows remote authenticated users to bypass input restrictions. IBM has not disclosed the affected component, accepted input, or validation operation that fails to reject it. Administrative privileges are required, and IBM does not identify the operation enabled after the input restriction is bypassed.

The record

CVE
CVE-2021-20496
Published
Jul 15, 2021
Updated
Sep 16, 2024
Vendor
IBM
Product
IBM Security Verify Access Docker
Classifications
CWE-20
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 15, 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=10.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

IBM · IBM Security Verify Access Dockerversion=10.0.0

Published CVSS scores

2.7IBM CorporationCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N
4.9NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/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-20Improper Input Validation

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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