Security readout for executives and security teams
Plain-English summary
CVE-2021-30589 is a Chrome browser flaw fixed before version 92.0.4515.107. A remote attacker could use a crafted click-to-call link to bypass navigation restrictions. The provided sources do not show active exploitation, CVSS scoring, or deeper impact details.
Executive priority
Handle through normal browser patch management, with urgency for any legacy or unmanaged endpoints. No source in the bundle supports emergency treatment based on active exploitation.
Technical view
The issue is insufficient validation of untrusted input in Chrome's Sharing component. Google describes affected Chrome versions as prior to 92.0.4515.107, where crafted click-to-call links could bypass navigation restrictions. The public bundle does not include exploit mechanics, root-cause detail, or crash-to-code-execution evidence.
Likely exposure
Exposure is most likely on endpoints running Google Chrome older than 92.0.4515.107, including Linux systems receiving distro browser packages. Current, auto-updated Chrome deployments are unlikely to remain exposed.
Exploitation context
The bundle marks KEV as false and provides no cited evidence of active exploitation. The attack vector is remote and link-based, but the public description only supports navigation-restriction bypass, not broader compromise.
Researcher notes
The public record is sparse: no CVSS, CWE, detailed bug notes, or exploit status are included. Do not infer impact beyond crafted click-to-call link navigation restriction bypass in Chrome Sharing before 92.0.4515.107.
Mitigation direction
- Update Chrome to 92.0.4515.107 or later.
- Apply relevant Fedora chromium package updates where applicable.
- Verify enterprise browser auto-update policies are functioning.
- Check Google and OS vendor advisories for any later guidance.
Validation and detection
- Inventory Chrome versions across managed endpoints.
- Flag any Chrome installation older than 92.0.4515.107.
- Review Linux package versions against Fedora advisories if Fedora is used.
- Confirm browser update telemetry shows successful deployment.
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-2021-30589 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/2021/07/stable-channel-update-for-desktop_20.htmlCVE reference · x_refsource_MISC
- https://crbug.com/1180510CVE reference · x_refsource_MISC
- FEDORA-2021-78b9d84299CVE reference · vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-6225d60814CVE reference · vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-02b301441fCVE 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.