Security readout for executives and security teams
Plain-English summary
CVE-2026-4447 is a high-severity Google Chrome V8 flaw. A malicious webpage could let an attacker run code inside Chrome’s sandbox on a user’s device. The practical business risk is highest where employees browse untrusted sites or updates are delayed.
Executive priority
Treat as a prompt browser update issue. It is high severity, remotely reachable through web content, and requires only user interaction. Prioritize enterprise-wide Chrome update compliance over emergency incident response unless new exploitation evidence appears.
Technical view
Google describes this as an inappropriate implementation in V8 affecting Chrome before 146.0.7680.153. CVSS 3.1 is 8.8: network attack, low complexity, no privileges, user interaction required, with high confidentiality, integrity, and availability impact. The CVE maps to CWE-693.
Likely exposure
Organizations are likely exposed if managed desktops run Google Chrome versions earlier than 146.0.7680.153. Exposure depends on update lag and user access to untrusted web content. The provided sources do not identify other affected products.
Exploitation context
Successful exploitation requires a user to open a crafted HTML page. The source bundle does not show CISA KEV listing or other cited evidence of active exploitation. The stated impact is arbitrary code execution inside a sandbox, not a documented sandbox escape.
Researcher notes
The Chromium issue may contain restricted details. Available public data does not provide root-cause specifics, proof-of-concept details, or exploit status. Analysis should stay anchored to Chrome’s release notice, the CVE record, and verified fleet version data.
Mitigation direction
- Upgrade Google Chrome desktop to 146.0.7680.153 or later.
- Enable and verify automatic Chrome updates across managed endpoints.
- Prioritize users exposed to untrusted browsing or email links.
- Monitor the Chrome release blog and CVE record for updated guidance.
- If updates are delayed, reduce access to untrusted web content.
Validation and detection
- Inventory endpoints for Chrome versions below 146.0.7680.153.
- Confirm Chrome reports version 146.0.7680.153 or later.
- Check browser management console update compliance.
- Verify vulnerability scanner findings reference CVE-2026-4447.
- Track exceptions for systems unable to update promptly.
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.
CWE-693: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution 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 lookupCVE-2026-4447 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
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H2.85.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_18.htmlCVE reference, Chrome
- https://issues.chromium.org/issues/486657483CVE reference, Chrome
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.
Protection Mechanism Failure
Protection Mechanism Failure represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.