Security readout for executives and security teams
Plain-English summary
CVE-2021-30546 is a Chrome Autofill memory-safety flaw fixed in Chrome 91.0.4472.101. A user visiting a crafted HTML page could expose the browser to heap corruption. The public bundle does not show confirmed active exploitation.
Executive priority
Treat this as a high-priority browser patching issue, especially for employee workstations. The business risk is broad exposure through normal web browsing, but the bundle does not justify an active-compromise assumption.
Technical view
The CVE describes a use-after-free in Google Chrome Autofill before 91.0.4472.101. The stated attack vector is remote interaction with crafted HTML, potentially causing heap corruption. The bundle provides no CVSS, CWE, exploit details, or public patch mechanics beyond vendor updates.
Likely exposure
Exposure is most likely on desktops or managed endpoints running Google Chrome earlier than 91.0.4472.101, including systems using vendor-packaged Chrome updates referenced by Gentoo and Fedora advisories.
Exploitation context
Sources support a remote crafted-page scenario but do not support claims of active exploitation. The CVE is not marked KEV in the provided bundle, and the restricted Chromium bug gives limited public technical detail.
Researcher notes
Public detail is sparse: no CVSS vector, CWE, or unrestricted Chromium bug analysis is included. Base validation on version checks and vendor advisory status rather than exploit signatures or behavioral indicators.
Mitigation direction
- Update Google Chrome to 91.0.4472.101 or a later supported release.
- Apply relevant Gentoo or Fedora package updates where Chrome is managed by OS packaging.
- Check vendor guidance for any platform-specific remediation details.
- Prioritize unsupported or unmanaged browser installations for removal or upgrade.
Validation and detection
- Inventory Chrome versions across managed endpoints.
- Confirm no systems report Chrome versions earlier than 91.0.4472.101.
- Review OS package advisories for Gentoo or Fedora-managed deployments.
- Verify browser update policies enforce current supported releases.
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-2021-30546 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/2021/06/stable-channel-update-for-desktop.htmlCVE reference · x_refsource_MISC
- https://crbug.com/1206911CVE reference · x_refsource_MISC
- GLSA-202107-06CVE reference · vendor-advisory, x_refsource_GENTOO
- FEDORA-2021-f94dadff78CVE reference · vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-ca58c57bdfCVE reference · vendor-advisory, x_refsource_FEDORA
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.