LiveActive security incident?Get immediate response
CVE Record

CVE-2021-30598: Type confusion in V8 in Google Chrome prior to 92.0.4515.159 allowed a remote attacker to execute arbitrary...

Type confusion in V8 in Google Chrome prior to 92.0.4515.159 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.

UnknownCVSS not scoredNot KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This Chrome flaw lets a malicious web page trigger a V8 JavaScript engine type confusion bug and run code inside Chrome’s sandbox. The source bundle does not show sandbox escape or active exploitation, but browser code execution is still business-significant because exposure can occur through normal web browsing.

Executive priority

Prioritize remediation on user workstations and browsing-heavy systems. This is not KEV-listed in the provided evidence, but remote browser code execution can create broad enterprise exposure if patching is weak.

Technical view

CVE-2021-30598 is a V8 type confusion issue affecting Google Chrome before 92.0.4515.159. The CVE description states a remote attacker could execute arbitrary code inside a sandbox via a crafted HTML page. No CVSS, CWE, detailed root cause, or exploit-in-the-wild evidence is provided in the bundle.

Likely exposure

Organizations are exposed where Chrome or downstream Chromium packages remained below 92.0.4515.159, including managed desktops, unmanaged endpoints, and Linux distributions carrying vulnerable Chromium builds.

Exploitation context

The cited CVE describes exploitation through a crafted HTML page. The bundle marks KEV as false and includes no cited evidence of active exploitation. It also does not state that the issue escapes Chrome’s sandbox.

Researcher notes

Treat this as a V8 renderer-side memory safety issue with sandbox-contained code execution per the CVE text. The bundle lacks CVSS, CWE, PoC, exploit telemetry, and bug details, so avoid assumptions beyond the crafted HTML attack vector and fixed Chrome version.

Mitigation direction

  • Update Google Chrome to 92.0.4515.159 or later.
  • Apply relevant Fedora Chromium package updates where Fedora systems are in scope.
  • Confirm endpoint browser auto-update is enabled and functioning.
  • Check current Google and distribution advisories for any superseding guidance.

Validation and detection

  • Inventory Chrome and Chromium versions across managed endpoints.
  • Flag Chrome versions earlier than 92.0.4515.159 for remediation.
  • Validate Fedora systems received the referenced Chromium security advisories.
  • Review browser management telemetry for disabled or failing updates.
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.

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.

description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2021-30598 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
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.