Security readout for executives and security teams
Plain-English summary
CVE-2021-30506 is a Chrome on Android issue where a malicious page could mislead a user into installing a web app, then inject HTML or script into a privileged page. It requires user interaction and affects Chrome before 90.0.4430.212.
Executive priority
Treat as a routine but meaningful browser update priority. The issue needs user interaction and has no cited active exploitation, but privileged-page script or HTML injection justifies timely patch compliance.
Technical view
The CVE describes incorrect security UI in Web App Installs in Google Chrome on Android before 90.0.4430.212. A crafted HTML page, combined with convincing the user to install a web application, could allow script or HTML injection into a privileged page.
Likely exposure
Primary exposure is Android devices running Google Chrome versions before 90.0.4430.212. Gentoo and Fedora references suggest downstream Chromium packaging attention, but the bundle does not define exact distro package ranges.
Exploitation context
The bundle does not cite active exploitation, and KEV is false. Exploitation depends on convincing a user to install a crafted web application, so phishing or social engineering would be the likely entry point.
Researcher notes
Public detail is limited. The CVE record gives the vulnerability class, affected platform, pre-fixed Chrome version, and attack condition, but no CVSS vector, CWE, exploit evidence, or detailed root-cause analysis in the provided bundle.
Mitigation direction
- Update Chrome on Android to 90.0.4430.212 or later.
- Apply relevant Gentoo or Fedora browser package updates where applicable.
- Check Google and distro vendor guidance for platform-specific remediation.
- Educate users not to install web apps from untrusted prompts or pages.
Validation and detection
- Inventory Android Chrome versions and flag versions before 90.0.4430.212.
- Confirm managed mobile devices have received the browser update.
- Review Linux browser package advisories if Gentoo or Fedora systems are in scope.
- Look for helpdesk or telemetry signals involving unexpected web app installs.
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-2021-30506 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://crbug.com/1180126CVE reference · x_refsource_MISC
- https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop.htmlCVE 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.