Question 1

What is CVE-2026-16377 — CVE-2026-16377?

Accepted Answer

Mitigation bypass in the PDF Viewer component. This vulnerability was fixed in Firefox 153 and Firefox ESR 140.13.

Question 2

What is the authoritative source for CVE-2026-16377?

Accepted Answer

CVE-2026-16377 (CVE-2026-16377) is catalogued in NVD + CISA KEV + FIRST EPSS and curated for EU compliance use cases by SQUR.

CVE-2026-16377CVE-2026-16377

Description