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CVE-2021-30602: Use after free in WebRTC in Google Chrome prior to 92.0.4515.159 allowed an attacker who convinced a user t...

Use after free in WebRTC in Google Chrome prior to 92.0.4515.159 allowed an attacker who convinced a user to visit a malicious website to potentially exploit heap corruption via a crafted HTML page.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2021-30602 is a Chrome WebRTC memory-safety flaw. A user visiting a malicious website could trigger heap corruption in Chrome versions before 92.0.4515.159. The sources do not provide CVSS data, but browser memory-corruption bugs are operationally urgent because exposure can be broad across workstations.

Executive priority

Treat this as a prompt browser patching issue, especially where users browse the public web. Urgency is high for outdated fleets, but the source bundle does not show active exploitation or CVSS scoring.

Technical view

The CVE describes a use-after-free in Chrome WebRTC before 92.0.4515.159. The attack vector is user interaction with a crafted HTML page, leading to potential heap corruption. Public sources identify Google Chrome as affected; the bundle also cites Fedora advisories and a Talos report, but does not include exploit details here.

Likely exposure

Organizations with unmanaged or outdated Chrome installations before 92.0.4515.159 are the clearest exposure. Systems using downstream Chromium packages may also require vendor-specific review based on cited Fedora advisories.

Exploitation context

The provided data says exploitation requires convincing a user to visit a malicious website. The bundle marks KEV as false and provides no cited evidence of active exploitation, public exploit use, or exploitation in the wild.

Researcher notes

Evidence is limited to a use-after-free description, affected Chrome threshold, and references. The Chrome bug tracker entry may have restricted details. Avoid assuming exploitability beyond the stated potential heap corruption without reviewing vendor or researcher disclosures.

Mitigation direction

  • Update Google Chrome to 92.0.4515.159 or later.
  • Check Fedora or OS vendor advisories for downstream Chromium package updates.
  • Prioritize centrally managed browser update enforcement.
  • Review vendor guidance if unsupported legacy browser versions remain.

Validation and detection

  • Inventory Chrome versions across managed endpoints.
  • Confirm installed versions are 92.0.4515.159 or later.
  • Check OS package advisory status for Chromium-derived packages.
  • Verify browser update policies are enforced and reporting successfully.
Prepared
Confidence
medium
Sources
8

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

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CVE-2021-30602 mapping review

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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
7Source 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.