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CVE Record

CVE-2021-30540: Incorrect security UI in payments in Google Chrome on Android prior to 91.0.4472.77 allowed a remote attack...

Incorrect security UI in payments in Google Chrome on Android prior to 91.0.4472.77 allowed a remote attacker to perform domain spoofing via a crafted HTML page.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This Chrome for Android issue could make a malicious page show misleading payment-related security UI, causing users to trust the wrong domain. The business risk is phishing or payment redirection, not confirmed device takeover. The source bundle does not provide CVSS, CWE, or active exploitation evidence.

Executive priority

Prioritize as a mobile browser hygiene issue with payment-fraud relevance. It is not supported as actively exploited in the bundle, but outdated Chrome on Android should be remediated promptly because the attack requires only a remote malicious page.

Technical view

CVE-2021-30540 is an incorrect security UI issue in Google Chrome on Android before 91.0.4472.77. A remote attacker could use a crafted HTML page to perform domain spoofing in payment flows. The bundle does not include exploit details, a CVSS score, or a named CWE.

Likely exposure

Exposure is most likely on Android devices still running Chrome older than 91.0.4472.77. Organizations with unmanaged mobile browsers, legacy devices, or weak MDM visibility should assume possible exposure until version inventory confirms otherwise.

Exploitation context

The CVE record describes remote domain spoofing via crafted HTML. The source bundle marks KEV as false and provides no cited evidence of active exploitation. Treat it as a phishing-enablement risk unless later vendor or threat intelligence updates say otherwise.

Researcher notes

Evidence is limited to CVE text and advisory references. No CVSS vector, CWE, exploit status, or detailed patch mechanics are included. Analysis should remain bounded to Chrome on Android before 91.0.4472.77 unless vendor advisories confirm broader package impact.

Mitigation direction

  • Update Chrome on Android to 91.0.4472.77 or a later supported version.
  • Use MDM or endpoint tooling to enforce current Chrome versions on mobile devices.
  • Check Google Chrome release notes and vendor advisories for deployment-specific guidance.
  • Update downstream Chromium packages where Gentoo or Fedora advisories apply.
  • Review payment-page user guidance for spoofed-domain awareness.

Validation and detection

  • Inventory Android Chrome versions and flag anything before 91.0.4472.77.
  • Confirm managed devices receive Chrome updates through MDM or app-store policy.
  • Check whether any Gentoo or Fedora Chromium packages remain vulnerable.
  • Review phishing or payment incidents involving misleading browser domain indicators.
  • Document compensating controls if legacy Android devices cannot be updated.
Prepared
Confidence
medium
Sources
7

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

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CVE-2021-30540 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
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.

0CVSS vectors
0Timeline events
0ADP providers
6Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
GoogleChromeunspecifiedListed
Weakness

CWE details

No CWE listed

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