CVE-2021-20534

mediumpriority · track · 14EPSS 0.005 · 46 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.55% (46th) EPSS

CVSS 4.9 · medium

Is it mine?

2 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

IBM Security Verify Access Docker 10.0.0 could allow a remote attacker to conduct phishing attacks, using an open redirect attack. By persuading a victim to visit a specially crafted Web site, a remote attacker could exploit this vulnerability to spoof the URL displayed to redirect a user to a malicious Web site that would appear to be trusted. This could allow the attacker to obtain highly sensitive information or conduct further attacks against the victim. IBM X-Force ID: 198814

cvss

Technical severity, 0–10. One row per scoring source.

4.9

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.2–4.9

v2.04.9mediumAV:N/AC:M/Au:S/C:P/I:P/A:Nprimary · NVD / NIST USexploitability 6.8 · impact 4.9

v3.13.5lowCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 0.9 · impact 2.5

v3.04.5mediumCVSS:3.0/I:H/S:U/PR:H/UI:R/C:N/AV:N/A:N/AC:L/RC:C/E:U/RL:Osecondary · ENISA EU

v3.04.5mediumCVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:Nsecondary · psirt@us.ibm.com USexploitability 0.9 · impact 3.6

v3.13.2lowCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-601USprimary

affected products (2)

Products and version ranges known to be affected.

IBM Security Verify Access Docker≤ 10.0.0enisa_euvdEU
ibm security verify access= 10.0.0nvdUScpe:2.3:a:ibm:security_verify_access:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2021-07-15modified 2026-06-17

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+2006 more

references (7)

External citations — patches, advisories, analysis.

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