Analyst readout for executives and security teams
Plain-English summary
This is a high-severity Chrome browser flaw in Skia, Chrome's graphics component. A remote attacker could potentially corrupt memory if a user opens a crafted HTML page. Because successful exploitation could affect confidentiality, integrity, and availability, organizations should prioritize updating Chrome versions older than 148.0.7778.216.
Executive priority
Treat this as a prompt browser patching item, not a panic event. The vulnerability is high impact, remotely reachable through web content, and user interaction is required. No cited source here confirms active exploitation.
Technical view
CVE-2026-9923 is a CWE-416 use-after-free vulnerability in Skia affecting Google Chrome prior to 148.0.7778.216. The CVSS 3.1 score is 8.8, with network attack vector, low complexity, no privileges required, and user interaction required. The stated impact is potential heap corruption via crafted HTML.
Likely exposure
Exposure is likely wherever managed or unmanaged desktop Chrome installations remain below 148.0.7778.216. The source bundle names Google Chrome only; it does not confirm impact to other Chromium-based browsers.
Exploitation context
The bundle says exploitation requires a crafted HTML page and user interaction. It does not state active exploitation, and KEV status is false, so active exploitation should not be assumed from these sources.
Researcher notes
Public details are limited to the CVE description, CVSS, CWE-416 classification, Chrome release reference, and Chromium issue link. Avoid assuming exploit availability, affected downstream browsers, or indicators beyond the provided sources.
Mitigation direction
- Update Google Chrome to 148.0.7778.216 or later.
- Verify browser auto-update is enabled and completing successfully.
- Prioritize users exposed to untrusted web content.
- Check Google Chrome release guidance for any updated remediation notes.
- Do not infer fixes for unnamed Chromium-based products from this bundle alone.
Validation and detection
- Inventory Chrome versions across managed endpoints.
- Flag systems running Chrome below 148.0.7778.216.
- Confirm updated endpoints have relaunched Chrome after patching.
- Review vendor release notes for changes to affected-version guidance.
- Monitor browser crash telemetry, noting no source-provided IOCs.
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 lookupCVE-2026-9923 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/500393328 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.