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CVE Record

CVE-2021-20534: IBM Security Verify Access Docker 10.0.0 could allow a remote attacker to conduct phishing attacks, using a...

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

MediumCVSS 4.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This vulnerability affects IBM Security Verify Access Docker 10.0.0 and could let an attacker abuse a trusted-looking URL to redirect a user to a malicious site. The main business risk is phishing and credential or sensitive-information theft, not direct system takeover.

Executive priority

Treat this as a moderate-priority phishing risk. It is unlikely to require emergency response absent exploitation evidence, but internet-facing identity services should be checked promptly because trusted-domain phishing can bypass user suspicion.

Technical view

The source describes an open redirect issue in IBM Security Verify Access Docker 10.0.0. Exploitation requires user interaction and could affect integrity by making a malicious destination appear trusted. The CVSS score is 4.5, with network access, low complexity, high privileges, and no confidentiality or availability impact recorded.

Likely exposure

Exposure appears limited to organizations running IBM Security Verify Access Docker version 10.0.0, especially where user-facing authentication or redirect flows are reachable by employees, partners, or customers.

Exploitation context

The bundle does not show CISA KEV listing or active exploitation evidence. The described attack is phishing-oriented and depends on persuading a victim to visit a crafted website or link.

Researcher notes

Evidence is limited to the CVE description, IBM advisory reference, and IBM X-Force entry. The bundle names only IBM Security Verify Access Docker 10.0.0. It does not provide exploit code, detailed root cause, or specific remediation text.

Mitigation direction

  • Inventory IBM Security Verify Access Docker deployments and identify version 10.0.0.
  • Review IBM’s advisory for the supported remediation or fixed level.
  • Apply IBM-recommended updates or configuration changes where applicable.
  • Monitor trusted-domain links that redirect users to external destinations.
  • Educate support and security teams about phishing using trusted-looking URLs.

Validation and detection

  • Confirm whether any deployment reports IBM Security Verify Access Docker 10.0.0.
  • Compare installed versions and configuration against IBM’s advisory.
  • Review redirect-related logs for unusual external destinations.
  • Verify user-facing authentication and redirect workflows after remediation.
  • Confirm phishing detection controls flag suspicious trusted-domain redirect links.
Prepared
Confidence
high
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

description · low confidence lookup

Container behavior lookup

The affected technology mentions containers, so container-specific ATT&CK technique review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2021-20534 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
4.5 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/I:H/S:U/PR:H/UI:R/C:N/AV:N/A:N/AC:L/RC:C/E:U/RL:O

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
4.5CVSS 3.0MediumCVSS:3.0/I:H/S:U/PR:H/UI:R/C:N/AV:N/A:N/AC:L/RC:C/E:U/RL:O0.93.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

4.5Medium
CVSS 3.0 vector shape for CVE-2021-20534Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/I:H/S:U/PR:H/UI:R/C:N/AV:N/A:N/AC:L/RC:C/E:U/RL:O

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
IBMSecurity Verify Access Docker10.0.0Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.