CVE-2026-13940
This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.
CSIRTS triage
- What
- An uninitialized use vulnerability in Cast has been identified.
- Who is affected
- Users of Microsoft Edge (Chromium-based).
- Urgency
- Remediation is important due to potential exploitation, though severity is unknown.
- Action
- Update Microsoft Edge to the latest version.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all EPSS-scored CVEs.
Advisory coverage (2)
- unknownCVE-2026-13940: Chromium: CVE-2026-13940 Uninitialized Use in Castmsrc · 2026-07-02
- mediumCVE-2026-13940: Uninitialized Use in Cast in Google Chrome prior to 150.0.7871.47 allowed an attacker on the l…nvd · 2026-06-30
External references
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[](https://www.csirts.com/cve/CVE-2026-13940)