CVE-2026-16372 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-16372HIGH

Mozilla Firefox — Privilege escalation in the DOM: Content Processes component

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   R  U  H  H  H    8.8   .0027   19.6     —

AFFECTED
  Product      Versions     Fixed
  Firefox      unspecified  153
  Thunderbird  unspecified  153

TIMELINE
  Jul 20  Reserved by mozilla
  Jul 21  EXPLOIT PUBLISHED — CVE-2026-16372 (Mozilla Firefox). Public exploit reference added.
  Jul 21  Published (CNA: mozilla)
  Jul 24  EXPLOIT PUBLISHED — CVE-2026-16372 (Mozilla Firefox). Public exploit reference added.

CWE-269 · CNA: mozilla · CVSS v3.1 · 3 references · NVD status: Modified

Description

Privilege escalation in the DOM: Content Processes component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
July 20, 2026	Reserved	Reserved by mozilla
July 21, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-16372 (Mozilla Firefox). Public exploit reference added.
July 21, 2026	Published	Published (CNA: mozilla)
July 24, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-16372 (Mozilla Firefox). Public exploit reference added.

Affected

Affected products and packages — 2 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Mozilla	Firefox	—	—	153
Mozilla	Thunderbird	—	—	153

Weaknesses

CWE-269

References (3)

https://bugzilla.mozilla.org/show_bug.cgi?id=2013800 [Exploit, Issue Tracking]
https://www.mozilla.org/security/advisories/mfsa2026-68/ [Vendor Advisory]
https://www.mozilla.org/security/advisories/mfsa2026-71/ [Vendor Advisory]

Authoritative record: CVE-2026-16372 at cve.org

Vendors: mozilla

Weaknesses: CWE-269

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-16372 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.