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[NEW] [medium] Mozilla Firefox: Vulnerability allows file manipulation

mediumCVE-2026-14906
An attacker can exploit a vulnerability in Mozilla Firefox to manipulate files.

CSIRTS triage

vendor: Mozillaproduct: FirefoxOther
What
A vulnerability in Mozilla Firefox allows an attacker to manipulate files.
Who is affected
Attackers targeting systems running the affected versions of Mozilla Firefox.
Urgency
Remediation is medium urgency due to the potential for file manipulation.
Action
Update to the latest version of Mozilla Firefox.

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

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Details

Source
CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity
medium
Published
2026-07-14
Exploitation
Not in CISA KEV at last sync
Language
Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2303

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-14906coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

Recent advisories for Mozilla Firefox

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-Bund (BSI) Security Advisories