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CVE-2025-55030

MEDIUMNVD 6.16.1—

6.1

Firefox for iOS would not respect a Content-Disposition header of type Attachment and would incorrectly display the content inline rather than downloading, potentially allowing for XSS attacks. This vulnerability was fixed in Firefox for iOS 142.

CVSS v3: 6.1
EG Score: 6.1(medium)
EPSS: 4.3%
KEV: Not listed

Published

August 19, 2025

Last Modified

April 13, 2026

References (2)

security@mozillahttps://bugzilla.mozilla.org/show_bug.cgi?id=1976304
security@mozillahttps://www.mozilla.org/security/advisories/mfsa2025-68/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-640Weak Password Recovery Mechanism for Forgotten Password

Data Freshness Timeline

(refreshed 12× in last 7d / 64× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-16 17:52 UTCEPSS rescore
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2026-06-15 17:48 UTCEPSS rescore
2026-06-14 23:17 UTCEPSS rescore
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2026-06-02 20:12 UTCEPSS rescore
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2026-05-21 22:43 UTCEPSS rescore
2026-05-21 09:35 UTCEG score recompute
2026-05-21 09:35 UTCGHSA enrichment
2026-05-20 22:37 UTCEPSS rescore
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2026-05-18 21:31 UTCEPSS rescore

Frequently asked(5)

What is CVE-2025-55030?

CVE-2025-55030 is a medium vulnerability published on August 19, 2025. Firefox for iOS would not respect a Content-Disposition header of type Attachment and would incorrectly display the content inline rather than downloading, potentially allowing for XSS attacks. This vulnerability was fixed in Firefox for iOS 142.

When was CVE-2025-55030 disclosed?

CVE-2025-55030 was first published in the National Vulnerability Database on August 19, 2025, with the most recent update on April 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2025-55030 actively exploited?

CVE-2025-55030 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2025-55030?

CVE-2025-55030 has a CVSS v3 base score of 6.1 (NVD).

How do I remediate CVE-2025-55030?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-55030, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2025-55030

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