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CVE-2021-30581: Use after free in DevTools in Google Chrome prior to 92.0.4515.107 allowed an attacker who convinced a user...

Use after free in DevTools in Google Chrome prior to 92.0.4515.107 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption 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

CVE-2021-30581 is a Google Chrome DevTools memory safety issue fixed before version 92.0.4515.107. The described attack requires convincing a user to install a malicious extension and then interact with crafted HTML. Business risk is mainly outdated Chrome fleets with weak extension control.

Executive priority

Treat as a browser hygiene and extension-control issue. Prioritize patching unmanaged or user-facing desktops, then enforce extension allowlisting. Escalation is lower than a known-exploited Chrome zero-day because the provided sources do not show active exploitation.

Technical view

The CVE describes a use-after-free in Chrome DevTools that could lead to heap corruption through crafted HTML after malicious extension installation. The bundle does not provide CVSS, CWE, or detailed root-cause data. Google’s stable-channel update identifies 92.0.4515.107 as the fixed desktop release.

Likely exposure

Exposure is likely limited to endpoints running Google Chrome before 92.0.4515.107, especially where users can install untrusted extensions. Fedora package advisories indicate downstream Chromium package updates were also relevant.

Exploitation context

No active exploitation is supported by the provided sources, and the CVE is not marked KEV. The known scenario requires user persuasion to install a malicious extension plus a crafted HTML page, so phishing and extension governance are central to risk.

Researcher notes

Evidence is sparse: no CVSS, CWE, exploit status, or public bug details are included. The strongest technical facts are use-after-free, DevTools component, heap corruption potential, malicious-extension precondition, crafted HTML trigger, and fixed Chrome version 92.0.4515.107.

Mitigation direction

  • Upgrade Chrome to 92.0.4515.107 or later.
  • Apply relevant Fedora Chromium updates where applicable.
  • Restrict installation of unapproved browser extensions.
  • Review vendor guidance for any additional platform-specific fixes.
  • Remove suspicious or unnecessary Chrome extensions from managed endpoints.

Validation and detection

  • Inventory Chrome and Chromium versions across endpoints.
  • Flag any Chrome version earlier than 92.0.4515.107.
  • Review extension allowlists and installed extension inventories.
  • Confirm Fedora systems received the referenced package updates.
  • Check security tooling for suspicious extension-install events.
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-2021-30581 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.