Analyst readout for executives and security teams
Plain-English summary
CVE-2026-9875 is a critical Chrome on Android WebGL memory safety issue. A crafted HTML page could let a remote attacker move beyond Chrome’s sandbox, which raises business risk from ordinary web browsing. The source bundle does not show confirmed active exploitation.
Executive priority
Treat this as urgent patching for Android Chrome fleets. The impact is severe, but the available sources do not prove exploitation in the wild. Focus on rapid version compliance and exception tracking.
Technical view
The vulnerability is an out-of-bounds read in WebGL, mapped to CWE-125. The CVSS 3.1 score is 9.6 with network attack vector, low complexity, no privileges, user interaction required, changed scope, and high confidentiality, integrity, and availability impact.
Likely exposure
Organizations are exposed where users run Google Chrome on Android versions prior to 148.0.7778.216, based on the CVE description. Exposure depends on Android Chrome fleet versioning and whether WebGL-capable browsing is permitted.
Exploitation context
The described attack requires a user to load a crafted HTML page. KEV is false in the provided bundle, and no cited source states active exploitation. The Chromium issue may contain restricted details, so exploit maturity is not established here.
Researcher notes
Evidence is limited to the CVE description, CVSS vector, CWE, and Chromium references. The source bundle identifies WebGL and sandbox escape potential but does not provide root-cause detail, exploit status, or complete Android release-note confirmation.
Mitigation direction
- Update Chrome on Android to 148.0.7778.216 or a later vendor-confirmed fixed version.
- Check Google Chrome release guidance for Android-specific fixed-channel details.
- Prioritize managed mobile browser updates for executives, admins, and high-risk users.
- Use mobile device management reporting to identify outdated Chrome installations.
- Apply existing web filtering controls for suspicious links while patching proceeds.
Validation and detection
- Inventory Android devices and record installed Chrome versions.
- Confirm no managed Android Chrome remains below 148.0.7778.216.
- Review MDM compliance reports for update failures or unmanaged devices.
- Monitor vendor advisories for corrected affected-version or fix details.
- Track security telemetry for suspicious browser crashes or sandbox-related alerts.
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-125: 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 lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-9875 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
- 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:H 2.8 6 CISA-ADP Vulnerability scoring details
Base CVSS 3.1 score
9.6 CriticalVector: 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 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/507508103 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.
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.