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CVE Record

CVE-2021-30568: Heap buffer overflow in WebGL in Google Chrome prior to 92.0.4515.107 allowed a remote attacker to potentia...

Heap buffer overflow in WebGL in Google Chrome prior to 92.0.4515.107 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2021-30568 is a Chrome WebGL memory-safety flaw fixed in Chrome 92.0.4515.107. A malicious HTML page could potentially corrupt heap memory in the browser. For organizations, the practical risk is exposure through normal web browsing on outdated Chrome installations.

Executive priority

Treat as a high-priority browser update issue, especially for user workstations and kiosk systems. The source supports remote webpage-triggered memory corruption, but not confirmed active exploitation. Priority should focus on closing outdated browser exposure rather than emergency incident response absent other evidence.

Technical view

The CVE describes a heap buffer overflow in Chrome's WebGL component before version 92.0.4515.107. The source states a remote attacker could potentially exploit heap corruption using a crafted HTML page. Public details are limited, and no CVSS or CWE is provided in the bundle.

Likely exposure

Systems running Google Chrome earlier than 92.0.4515.107 are the identified exposure. Fedora advisories indicate related packaged browser updates were issued. The bundle does not identify other affected products, specific platforms, or exact vulnerable version ranges beyond Chrome before 92.0.4515.107.

Exploitation context

The bundle does not show CISA KEV listing or cited active exploitation. The described attack context is remote content: a crafted HTML page processed by Chrome WebGL. Public technical detail appears limited, likely because the Chromium bug reference may restrict sensitive issue details.

Researcher notes

Public evidence is sparse: no CVSS, CWE, exploit status, or detailed root-cause analysis is included. Analysis should stay anchored to Chrome before 92.0.4515.107 and WebGL heap corruption via crafted HTML. Avoid assuming exploitability details not present in the sources.

Mitigation direction

  • Upgrade Google Chrome to 92.0.4515.107 or later.
  • Apply relevant Fedora browser package updates where Fedora systems are in scope.
  • Use browser management to enforce minimum approved Chrome versions.
  • Check Google and distribution advisories for any environment-specific guidance.

Validation and detection

  • Inventory Chrome versions across managed endpoints.
  • Confirm no deployed Chrome version is below 92.0.4515.107.
  • Verify Fedora advisory updates are applied on affected Linux hosts.
  • Review vulnerability scanner findings against the exact installed browser package versions.
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.

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CVE-2021-30568 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.