Security readout for executives and security teams
Plain-English summary
A memory-safety flaw in Google Chrome can let an attacker use a malicious webpage to run code outside Chrome’s sandbox. A victim must open the crafted page, but no login or prior access is required. This creates serious risk to data, credentials, and endpoint integrity on unpatched systems.
Executive priority
Treat this as an urgent browser update because exploitation could compromise an endpoint after ordinary web browsing. Accelerate deployment and verify coverage. Active exploitation is not established by the supplied evidence, but the impact and low attack complexity justify prompt action.
Technical view
CVE-2026-79257 is a CWE-416 use-after-free vulnerability in Chrome’s Views component. Chrome versions before 152.0.7977.65 are affected. Successful exploitation through crafted HTML may achieve arbitrary code execution outside the sandbox. The supplied CVSS 3.1 score is 9.6, while Chromium rates the issue High.
Likely exposure
Endpoints running desktop Google Chrome earlier than 152.0.7977.65 are likely exposed when users browse untrusted or attacker-controlled content. The bundle does not identify affected operating systems, Chromium-derived browsers, or other products, so their status should not be inferred.
Exploitation context
Exploitation is remote and requires a user to open a crafted HTML page. No privileges are required, and successful exploitation can cross the sandbox boundary. The supplied record is not listed in KEV, and the sources provide no evidence of active exploitation.
Researcher notes
The record attributes the flaw to Views and identifies a use-after-free condition, but provides no deeper root-cause details. Scope conclusions should remain limited to Google Chrome before 152.0.7977.65. The Chromium issue may contain restricted or incomplete information; avoid inferring exploit availability from its existence.
Mitigation direction
- Update Google Chrome to version 152.0.7977.65 or later.
- Prioritize internet-facing user endpoints and systems handling sensitive data.
- Use enterprise browser management to accelerate rollout and identify update failures.
- Check Google’s release guidance for any additional remediation instructions.
Validation and detection
- Inventory installed Chrome versions across managed endpoints.
- Confirm no active installation remains below 152.0.7977.65.
- Verify update compliance across all operating-system and device groups.
- Review browser-management telemetry for failed or deferred updates.
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-416: 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-2026-79257 mapping review
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Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.6 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/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:C/C:H/I:H/A:H2.86CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
9.6CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/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/2026/08/stable-channel-update-for-desktop_0256176589.htmlCVE reference, Chrome
- https://issues.chromium.org/issues/517959443CVE 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.