Security readout for executives and security teams
Plain-English summary
CVE-2021-30514 is a Google Chrome Autofill memory safety flaw fixed before version 90.0.4430.212. A malicious web page could potentially trigger heap corruption, but the CVE description says the attacker first needed a compromised renderer process.
Executive priority
Treat as a browser patch compliance issue, not a new emergency if fleets are current. Escalate if any legacy Chrome or Chromium estate remains below the fixed version.
Technical view
The issue is a use-after-free in Chrome Autofill. Public CVE text describes potential heap corruption via crafted HTML, reachable by a remote attacker only after renderer compromise. The source bundle does not provide CVSS, CWE, detailed exploitability, or root-cause details.
Likely exposure
Exposure is mainly endpoints or managed environments running Google Chrome or Chromium-derived packages older than 90.0.4430.212, including Linux distribution packages referenced by Gentoo and Fedora advisories.
Exploitation context
The provided bundle does not show CISA KEV listing or confirmed active exploitation. The attack context is web content, but the stated prerequisite is an already compromised renderer process.
Researcher notes
Public details are sparse. The useful confirmed facts are component, bug class, fixed Chrome version, crafted HTML vector, and renderer-compromise prerequisite. Avoid assuming sandbox escape, active exploitation, or affected Chromium forks beyond cited package advisories.
Mitigation direction
- Update Google Chrome to 90.0.4430.212 or later.
- Update Chromium packages using relevant distribution security advisories.
- Prioritize unmanaged, kiosk, VDI, and legacy desktop browser fleets.
- Check vendor guidance for any environment-specific remediation details.
Validation and detection
- Confirm Chrome versions are 90.0.4430.212 or later.
- Verify Linux Chromium packages include the relevant security advisory fixes.
- Review endpoint inventory for unsupported Chrome or Chromium builds.
- Confirm browser auto-update policy is enabled and functioning.
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-2021-30514 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/2021/05/stable-channel-update-for-desktop.htmlCVE reference · x_refsource_MISC
- https://crbug.com/1200766CVE 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.