Security readout for executives and security teams
Plain-English summary
A malicious webpage can exploit a memory-safety flaw in older Google Chrome versions and run attacker-controlled code within Chrome’s sandbox. User interaction is required, typically visiting crafted content. The vulnerability is rated High with CVSS 8.8, but the supplied sources do not establish active exploitation or a sandbox escape.
Executive priority
Treat this as an urgent browser update across the enterprise. Its low-complexity web delivery and potentially severe impact justify accelerated deployment, while the absence of confirmed active exploitation keeps the rating below critical based on current evidence.
Technical view
CVE-2026-16418 is a V8 stack buffer overflow, classified as CWE-121. Chrome versions before 150.0.7871.182 can permit remote arbitrary code execution inside the browser sandbox through crafted HTML. The CVSS vector indicates network accessibility, low complexity, no privileges, required user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure includes desktop Google Chrome installations running versions earlier than 150.0.7871.182, particularly where users browse untrusted or externally supplied webpages. The supplied evidence does not identify other affected products or confirm whether managed update policies have already reduced exposure.
Exploitation context
Exploitation requires a user to open crafted HTML content. Successful exploitation can execute arbitrary code within Chrome’s sandbox. The supplied record is not in KEV and provides no evidence of active exploitation, public proof-of-concept availability, or sandbox escape capability.
Researcher notes
The available description establishes a V8 stack buffer overflow and code execution inside the sandbox. It does not disclose the vulnerable component path, trigger mechanics, exploit reliability, root cause details, or patch diff. Researchers should not infer sandbox escape or exploitation in the wild from the CVSS score alone.
Mitigation direction
- Update Google Chrome to version 150.0.7871.182 or later.
- Restart Chrome after updating so the corrected version is active.
- Prioritize systems used for browsing external or untrusted content.
- Review Google and Chromium guidance for any subsequent remediation updates.
Validation and detection
- Inventory deployed Chrome versions and identify installations below 150.0.7871.182.
- Verify the running browser version after update and restart.
- Confirm managed update policies successfully reach remote and intermittently connected devices.
- Recheck vendor advisories for revised affected-version or exploitation information.
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-121: 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-2026-16418 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/2026/07/stable-channel-update-for-desktop_0256605430.htmlCVE reference, Chrome
- https://issues.chromium.org/issues/522125255CVE 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.
Stack-based Buffer Overflow
Stack-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.