Analyst readout for executives and security teams
Plain-English summary
CVE-2026-9995 is a high-severity Chrome flaw in WebXR. A malicious webpage could trigger a use-after-free bug and run code inside Chrome’s sandbox if a user visits the page. The business risk is broad browser exposure, but the supplied sources do not show active exploitation.
Executive priority
Treat as high priority for standard browser patch operations. It is remotely reachable through web browsing and can execute code inside the sandbox, but the supplied evidence does not support emergency active-exploitation handling.
Technical view
The issue is CWE-416 use-after-free in Chrome WebXR before 148.0.7778.216. CVSS 3.1 is 8.8 with network attack vector, low complexity, no privileges required, and user interaction required. Successful exploitation can affect confidentiality, integrity, and availability within the browser sandbox.
Likely exposure
Organizations with Google Chrome versions earlier than 148.0.7778.216 are the likely exposure population, especially users who browse untrusted websites. Exposure evidence is limited to Chrome and WebXR in the provided sources.
Exploitation context
The provided CVE text says exploitation requires a crafted HTML page and user interaction. KEV is false, and the bundle provides no cited evidence of active exploitation, public exploit availability, or exploitation outside Chrome’s sandbox.
Researcher notes
Focus validation on version exposure, WebXR attack surface, and managed update coverage. The Chromium issue is referenced, but the supplied bundle does not include technical root-cause detail, proof of concept, indicators of compromise, or special mitigations beyond vendor update guidance.
Mitigation direction
- Update Chrome to 148.0.7778.216 or later, following Google release guidance.
- Prioritize managed browser updates for high-risk user groups.
- Confirm enterprise update policies are enforcing the fixed Chrome channel.
- Review Google’s Chrome release post for any revised mitigation guidance.
Validation and detection
- Inventory Chrome versions across managed endpoints.
- Flag any Chrome installation older than 148.0.7778.216.
- Confirm browser update telemetry after deployment.
- Check whether vulnerable systems allow users to browse untrusted pages.
- Monitor vendor advisories for updated exploit or remediation details.
Public sources used
Based on public source material and reviewed before publication.
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-2026-9995 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:H 2.8 5.9 CISA-ADP Vulnerability scoring details
Base CVSS 3.1 score
8.8 HighVector: 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 reserved CVE Program
The CVE ID was reserved by the assigning CNA.
- CVE published CVE Program
The CVE record was published.
- CVE updated CVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 source CVE List V5
- https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html CVE reference, Chrome
- https://issues.chromium.org/issues/513256572 CVE 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.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.