Security readout for executives and security teams
Plain-English summary
A malicious webpage could exploit a memory-safety flaw in WebGL on an Android device running an outdated Chrome version. Successful exploitation could let attacker-controlled code escape Chrome’s sandbox, potentially compromising data and the device. User interaction is required, such as opening the crafted page.
Executive priority
Treat this as an urgent Android browser update because successful exploitation could escape browser isolation and cause full confidentiality, integrity, and availability impact. Prioritize devices handling corporate credentials or sensitive information. Current sources do not confirm exploitation in the wild.
Technical view
CVE-2026-84352 is a WebGL use-after-free vulnerability (CWE-416) in Chrome on Android before 152.0.7977.75. The source states that crafted HTML can trigger remote arbitrary code execution outside the sandbox. Its CVSS 3.1 score is 9.6, reflecting network reachability, low attack complexity, required user interaction, and high impact.
Likely exposure
Android devices using Chrome versions earlier than 152.0.7977.75 are potentially exposed, particularly where users browse untrusted or externally supplied links. The bundle does not identify other affected products or confirm whether embedded Chromium-based applications are affected.
Exploitation context
The attack requires a user to open attacker-crafted HTML, but needs no privileges and has low stated complexity. The source bundle reports sandbox escape and arbitrary code execution. KEV status is false, and the supplied sources do not establish active exploitation or public exploit availability.
Researcher notes
The description establishes a WebGL use-after-free and sandbox-escaping code execution, but provides limited root-cause detail. The Chromium issue may restrict technical information while remediation rolls out. The desktop release reference is inconsistent with the Android-specific description, so product scope should not be expanded without further vendor confirmation.
Mitigation direction
- Update Chrome on Android to version 152.0.7977.75 or later.
- Prioritize managed Android devices that access sensitive corporate data.
- Confirm automatic Chrome updates are enabled and functioning.
- Restrict untrusted browsing on devices that cannot be updated promptly.
- Check Google and Chromium guidance for any additional mitigations.
Validation and detection
- Inventory Chrome versions across managed Android devices.
- Verify no device remains below version 152.0.7977.75.
- Confirm the updated browser remains installed after device synchronization.
- Review update failures, unsupported devices, and policy exceptions.
- Monitor 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-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-2026-84352 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: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/2026/09/stable-channel-update-for-desktop.htmlCVE reference, Chrome
- https://issues.chromium.org/issues/546260492CVE 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.