CVE-2026-11303

unknowncovered by 1 sourcefirst seen 2026-06-09

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: A use after free vulnerability in PDFium affects Microsoft Edge.
Who is affected: Users of Microsoft Edge (Chromium-based).
Urgency: Remediation urgency is unknown as the severity is not specified.
Action: Refer to Google Chrome Releases for updates addressing this vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

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Exploitation outlook

Low exploitation risk0.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all EPSS-scored CVEs.

Advisory coverage (1)

unknownCVE-2026-11303: Chromium: CVE-2026-11303 Use after free in PDFiummsrc · 2026-06-09

External references

NVD record for CVE-2026-11303

CVE.org record

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