Security readout for executives and security teams
Plain-English summary
CVE-2021-30564 is a Chrome WebXR memory corruption flaw. A malicious web page could potentially trigger heap corruption in Chrome versions before 91.0.4472.164. The public record does not provide CVSS scoring, confirmed exploitation, or detailed impact beyond potential heap corruption.
Executive priority
Treat this as a prompt browser patching item, especially for fleets with unmanaged Chrome. Business urgency is driven by remote web content reachability, but public evidence does not support emergency active-exploitation claims.
Technical view
The CVE describes a heap buffer overflow in Google Chrome's WebXR component reachable through crafted HTML. Google addressed it in the Stable Channel desktop update to 91.0.4472.164. Public sources do not expose root-cause detail, exploitability boundaries, or platform-specific scope.
Likely exposure
Organizations with unmanaged or outdated Google Chrome installations before 91.0.4472.164 are the known exposure. Evidence in the bundle only names Google Chrome, so other browsers should not be assumed affected from these sources.
Exploitation context
The sources support remote attack potential through a crafted HTML page. They do not show CISA KEV listing, confirmed active exploitation, public exploit availability, or reliable exploitation details.
Researcher notes
The public CVE is sparse: no CVSS, CWE, detailed advisory text, or accessible root-cause analysis is included. The Chrome bug reference may be restricted, so validation should focus on version state and vendor release information.
Mitigation direction
- Update Google Chrome to 91.0.4472.164 or later.
- Use enterprise browser management to enforce minimum Chrome versions.
- Prioritize endpoints where users browse untrusted sites.
- Check Google guidance for any later vendor-specific recommendations.
Validation and detection
- Inventory Chrome versions across managed endpoints.
- Confirm no Chrome installation remains below 91.0.4472.164.
- Review browser management policy compliance reports.
- Check vulnerability scanner findings against actual installed Chrome versions.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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.
CVE-2021-30564 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://chromereleases.googleblog.com/2021/07/stable-channel-update-for-desktop.htmlCVE reference · x_refsource_MISC
- https://crbug.com/1221309CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.