Analyst readout for executives and security teams
Plain-English summary
This is a high-severity Chrome browser flaw in ANGLE, Chrome's graphics translation layer. A crafted web page could trigger use-after-free memory corruption and let an attacker run code inside Chrome's sandbox. It requires user interaction and is not listed as actively exploited in the provided sources.
Executive priority
Treat this as a prompt browser update priority, not a confirmed emergency. The flaw can lead to code execution through web content, but the provided evidence does not show active exploitation. Update Chrome broadly and verify completion across the fleet.
Technical view
CVE-2026-9927 is CWE-416 use-after-free in ANGLE 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. Reported impact is arbitrary code execution inside a sandbox via crafted HTML.
Likely exposure
Organizations with desktop Chrome installations older than 148.0.7778.216 are potentially exposed. Risk is highest for users who browse untrusted sites or receive links through email, chat, ads, or compromised websites. The bundle does not identify other Chromium-based products as affected.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. The attack scenario is remote delivery through crafted HTML, requiring a user to visit or open attacker-controlled content. The stated execution occurs inside Chrome's sandbox, so further compromise would depend on additional conditions not evidenced here.
Researcher notes
Do not assume full host compromise from the description alone; the stated execution context is inside the sandbox. The public bundle names ANGLE and CWE-416 but does not provide root-cause details, proof-of-concept material, or product coverage beyond Google Chrome.
Mitigation direction
- Update Google Chrome to 148.0.7778.216 or later using vendor guidance.
- Prioritize managed desktop fleets and high-risk user groups.
- Confirm auto-update policies are enabled and completing successfully.
- Restrict exposure to untrusted browsing where immediate updating is delayed.
- Monitor Google Chrome release notes for follow-up guidance.
Validation and detection
- Inventory Chrome versions across managed endpoints.
- Confirm no desktop Chrome remains below 148.0.7778.216.
- Review endpoint management reports for failed browser updates.
- Check vulnerability scanner results after update deployment.
- Track the Chromium issue and Chrome release post for new 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-2026-9927 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/500540958 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.