Analyst readout for executives and security teams
Plain-English summary
CVE-2026-9943 is a Chrome on Android WebGL flaw that could let a malicious web page read limited data it should not access. It requires a user to visit crafted content. The CVE says affected versions are before 148.0.7778.216, but the provided release reference appears desktop-focused, so platform-specific confirmation matters.
Executive priority
Treat as a routine but timely browser update issue. Business urgency is moderate because the flaw can leak cross-origin data, but sources do not indicate active exploitation or system compromise capability.
Technical view
The issue is a CWE-125 out-of-bounds read in WebGL. A remote unauthenticated attacker could leak cross-origin data through crafted HTML if the user opens it. CVSS is 4.3 with low confidentiality impact and no integrity or availability impact. Chromium rates the security severity High.
Likely exposure
Organizations with managed or unmanaged Android devices using Chrome versions before 148.0.7778.216 may be exposed. Exposure is highest where users browse untrusted sites or email links on Android Chrome.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. Exploitation requires user interaction with crafted HTML and is limited to data leakage, not code execution, based on the CVE description.
Researcher notes
The source bundle has a platform-reference mismatch: the CVE text says Chrome on Android, while the included Chrome Releases URL is desktop-focused. Do not broaden affected scope beyond Android Chrome without confirming vendor records.
Mitigation direction
- Update Chrome on Android to 148.0.7778.216 or later where available.
- Check Google Chrome release guidance for Android-specific availability and rollout timing.
- Prioritize managed Android fleets and high-risk users who browse untrusted content.
- Use mobile device management reporting to enforce minimum Chrome versions.
Validation and detection
- Inventory Android Chrome versions across managed devices.
- Confirm whether any devices run versions before 148.0.7778.216.
- Review browser update compliance in MDM or endpoint management tooling.
- Check whether Google has published additional Android-specific guidance.
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 lookupCVE-2026-9943 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
- Medium
- CVSS
- 4.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
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:L/I:N/A:N 2.8 1.4 CISA-ADP Vulnerability scoring details
Base CVSS 3.1 score
4.3 MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
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/503464551 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.