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CVE Record

CVE-2021-30587: Inappropriate implementation in Compositing in Google Chrome prior to 92.0.4515.107 allowed a remote attack...

Inappropriate implementation in Compositing in Google Chrome prior to 92.0.4515.107 allowed a remote attacker to potentially spoof the contents of the Omnibox (URL bar) 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 bug could let a crafted webpage make the browser address bar show misleading contents. That can support phishing because users may trust the displayed URL. It affected Chrome before 92.0.4515.107 and was addressed in Google’s July 2021 stable update. No provided source says it is in KEV or actively exploited.

Executive priority

Handle through normal browser patch governance, with attention to unmanaged endpoints. The issue can strengthen phishing scenarios by undermining URL trust, but the provided evidence does not show active exploitation or severe technical impact beyond spoofing.

Technical view

CVE-2021-30587 is an inappropriate implementation flaw in Google Chrome Compositing. A remote attacker using crafted HTML could potentially spoof Omnibox contents. The source bundle identifies Chrome prior to 92.0.4515.107 as affected, but does not provide CVSS, CWE, detailed root cause, or exploit mechanics.

Likely exposure

Exposure is mainly endpoints running outdated Google Chrome or Chromium-derived distro packages from before the 92.0.4515.107 fix. Current, auto-updated enterprise browsers are unlikely to remain exposed unless update controls, golden images, or unmanaged systems preserved old versions.

Exploitation context

The provided sources support remote, webpage-delivered Omnibox spoofing potential. They do not support claims of active exploitation, public weaponization, or inclusion in CISA KEV. Treat this as phishing-enablement risk rather than confirmed code execution.

Researcher notes

The record lacks CVSS, CWE, and detailed bug analysis. The Chromium bug reference may contain restricted details. Avoid assuming other Chromium-based browsers are affected unless vendor advisories confirm it. Focus validation on version evidence and vendor package status.

Mitigation direction

  • Update Google Chrome to 92.0.4515.107 or later.
  • Apply relevant Chromium package updates from the operating system vendor.
  • Check enterprise browser management for pinned or blocked Chrome updates.
  • Refresh old endpoint images that may include vulnerable Chrome builds.
  • Review Google and distribution guidance for any environment-specific instructions.

Validation and detection

  • Inventory Chrome and Chromium versions across managed endpoints.
  • Confirm no deployed Chrome build is older than 92.0.4515.107.
  • Check Linux package versions against Fedora or vendor advisories.
  • Review browser update policy for disabled or delayed automatic updates.
  • Prioritize validation on user workstations exposed to web and email links.
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

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CVE-2021-30587 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.