Security readout for executives and security teams
Plain-English summary
CVE-2021-30513 is a Google Chrome V8 engine flaw that could let a remote attacker trigger memory corruption through a crafted HTML page. The public record names Chrome before 90.0.4430.212 as affected. No source in the bundle shows known active exploitation.
Executive priority
Treat this as a high-priority browser update issue. The attack surface is common, remote, and user-facing, but the provided sources do not show confirmed active exploitation.
Technical view
The issue is type confusion in V8, Chrome's JavaScript engine, leading to potential heap corruption when processing attacker-controlled HTML. Google addressed it in Chrome 90.0.4430.212. The bundle does not include CVSS details, CWE mapping, exploit maturity, or technical root-cause specifics beyond the V8 type confusion description.
Likely exposure
Exposure is most likely on endpoints, VDI images, kiosks, or servers running Google Chrome before 90.0.4430.212. Organizations using Gentoo or Fedora packages should also review the referenced distribution advisories for relevant package status.
Exploitation context
The public description supports remote exploitation through a crafted HTML page. The source bundle does not identify in-the-wild exploitation, and KEV status is false, so active exploitation should not be assumed from these sources.
Researcher notes
The Chrome bug reference is listed but public detail may be limited. Available evidence supports V8 type confusion and heap corruption potential only. Avoid asserting exploitability beyond crafted HTML and verify patch lineage against Google’s release notes and distro advisories.
Mitigation direction
- Upgrade Google Chrome to 90.0.4430.212 or later.
- Apply relevant Gentoo or Fedora security package updates where applicable.
- Check Google and distribution advisories for any newer guidance.
- Prioritize shared workstations, browsing-heavy users, and unmanaged endpoints.
Validation and detection
- Inventory Chrome versions and flag anything before 90.0.4430.212.
- Confirm package update status on Gentoo and Fedora systems.
- Verify managed browser update policies are enforcing current versions.
- Document exceptions for offline, kiosk, or legacy endpoints.
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-2021-30513 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/1200490CVE 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.