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Multiple vulnerabilities in Mozilla products (02 September 2026)

unknownCVE-2026-84137CVE-2026-84637CVE-2026-84640CVE-2026-84138CVE-2026-84126CVE-2026-84135
Multiple vulnerabilities were discovered in Mozilla products. Some of them allow an attacker to cause privilege escalation, data confidentiality breach and security policy bypass.

CSIRTS triage

vendor: MozillaPrivilege escalationInformation disclosureOther
What
Multiple vulnerabilities in Mozilla products enable privilege escalation, data confidentiality breach, and security policy bypass.
Who is affected
Users of affected Mozilla products.
Urgency
Vulnerabilities allowing privilege escalation and data breach warrant urgent patching.
Action
Update all Mozilla products to patched versions immediately.

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

Details

Source
CERT-FR Avis de sécurité (FR · national-cert · site)
Severity
unknown
Published
2026-09-02
Exploitation
Not in CISA KEV at last sync
Language
Machine-translated to English — verify against the original

Original advisory: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-1106/

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-84137coverage & exploitation statusNVD · CVE.org
CVE-2026-84637coverage & exploitation statusNVD · CVE.org
CVE-2026-84640coverage & exploitation statusNVD · CVE.org
CVE-2026-84138coverage & exploitation statusNVD · CVE.org
CVE-2026-84126coverage & exploitation statusNVD · CVE.org
CVE-2026-84135coverage & exploitation statusNVD · CVE.org
CVE-2026-84117coverage & exploitation statusNVD · CVE.org
CVE-2026-84140coverage & exploitation statusNVD · CVE.org
CVE-2026-84134coverage & exploitation statusNVD · CVE.org
CVE-2026-84122coverage & exploitation statusNVD · CVE.org
CVE-2026-84642coverage & exploitation statusNVD · CVE.org
CVE-2026-84121coverage & exploitation statusNVD · CVE.org
CVE-2026-84123coverage & exploitation statusNVD · CVE.org
CVE-2026-16365coverage & exploitation statusNVD · CVE.org
CVE-2026-16371coverage & exploitation statusNVD · CVE.org
CVE-2026-84144coverage & exploitation statusNVD · CVE.org
CVE-2026-84641coverage & exploitation statusNVD · CVE.org
CVE-2026-84119coverage & exploitation statusNVD · CVE.org
CVE-2026-84639coverage & exploitation statusNVD · CVE.org
CVE-2026-84132coverage & exploitation statusNVD · CVE.org
CVE-2026-74952coverage & exploitation statusNVD · CVE.org
CVE-2026-84124coverage & exploitation statusNVD · CVE.org
CVE-2026-84145coverage & exploitation statusNVD · CVE.org
CVE-2026-84136coverage & exploitation statusNVD · CVE.org
CVE-2026-84131coverage & exploitation statusNVD · CVE.org
CVE-2026-75874coverage & exploitation statusNVD · CVE.org
CVE-2026-84133coverage & exploitation statusNVD · CVE.org
CVE-2026-84129coverage & exploitation statusNVD · CVE.org
CVE-2026-84127coverage & exploitation statusNVD · CVE.org
CVE-2026-84141coverage & exploitation statusNVD · CVE.org
CVE-2026-84125coverage & exploitation statusNVD · CVE.org
CVE-2026-84120coverage & exploitation statusNVD · CVE.org
CVE-2026-84139coverage & exploitation statusNVD · CVE.org
CVE-2026-84142coverage & exploitation statusNVD · CVE.org
CVE-2026-84118coverage & exploitation statusNVD · CVE.org
CVE-2026-84143coverage & exploitation statusNVD · CVE.org
CVE-2026-84130coverage & exploitation statusNVD · CVE.org
CVE-2026-84128coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Mozilla products

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from CERT-FR Avis de sécurité