Security readout for executives and security teams
Plain-English summary
This is a high-severity Chrome V8 memory-safety flaw. A user who visits a malicious page could expose the browser to heap corruption with potential compromise impact. CISA lists it as known exploited, so this is not theoretical and should be prioritized across managed Chrome fleets.
Executive priority
Treat as urgent browser patching. Known exploitation plus high impact makes delayed update exposure a practical business risk, especially for users handling sensitive systems or data.
Technical view
CVE-2025-5419 is an out-of-bounds read and write in Chrome V8 before 137.0.7151.68. The CVSS 3.1 score is 8.8 with network attack vector, low complexity, no privileges required, user interaction required, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is likely wherever Google Chrome desktop versions before 137.0.7151.68 remain in use. The provided bundle does not establish affected server software, mobile scope, or other Chromium-based products beyond the cited vendor sources.
Exploitation context
CISA KEV status supports known exploitation in the wild. The provided sources do not describe campaigns, targets, exploit maturity, or technical exploit details. The realistic scenario is a user reaching crafted HTML content in an unpatched browser.
Researcher notes
The source bundle confirms memory corruption in V8 and KEV status, but does not provide exploit internals or detailed affected-platform boundaries. Validation should focus on version evidence, update telemetry, and vendor advisories rather than proof-of-concept reproduction.
Mitigation direction
- Update Chrome to 137.0.7151.68 or later.
- Confirm browser restarts completed after update deployment.
- Check Google and Microsoft guidance for affected channel details.
- Prioritize managed endpoints with internet-facing browsing activity.
- Accelerate patching for privileged users and high-risk business units.
Validation and detection
- Inventory Chrome versions across managed endpoints.
- Flag Chrome versions earlier than 137.0.7151.68.
- Verify CISA KEV tracking includes CVE-2025-5419.
- Confirm update compliance after browser restart.
- Review EDR telemetry for browser exploitation alerts.
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
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CWE-125: Exact CWE lookup
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Open ATT&CK lookupCWE-787: Exact CWE lookup
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Open ATT&CK lookupCVE-2025-5419 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
- Yes
- 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.
CISA KEV status
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:H2.85.9Primary CVE scoreVulnerability 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
Source materials
- CVE List V5 sourceCVE List V5
- https://chromereleases.googleblog.com/2025/06/stable-channel-update-for-desktop.htmlCVE reference
- https://issues.chromium.org/issues/420636529CVE reference
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-5419CVE reference · government-resource
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-5419CVE reference
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.
Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.