CVE-2024-6611

CRITICALNVD 9.89.8—

9.8

A nested iframe, triggering a cross-site navigation, could send SameSite=Strict or Lax cookies. This vulnerability affects Firefox < 128 and Thunderbird < 128.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 69.5%
KEV: Not listed

Published

July 9, 2024

Last Modified

April 4, 2025

References (6)

security@mozillahttps://bugzilla.mozilla.org/show_bug.cgi?id=1844827
security@mozillahttps://www.mozilla.org/security/advisories/mfsa2024-29/
security@mozillahttps://www.mozilla.org/security/advisories/mfsa2024-32/
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.mozilla.org/show_bug.cgi?id=1844827
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2024-29/
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2024-32/

Vendor Advisories for CVE-2024-6611(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

CVE-2024-6611
Microsoft Security Response Center (MSRC)Critical
A nested iframe, triggering a cross-site navigation, could send SameSite=Strict or Lax cookies. This vulnerability affects Firefox < 128 and Thunderbird < 128.

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	firefox-mozsymbols (128.0+build2-0ubuntu0.20.04.1) @ focal	2026-05-23	ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

CWE-1275

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

UbuntuUSN-6890-1MEDIUM
Firefox vulnerabilities

Data Freshness Timeline

(refreshed 10× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:43 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-23 22:46 UTCEG score recompute
2026-05-23 22:46 UTCVendor advisory
2026-05-23 22:46 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2024-6611?

CVE-2024-6611 is a critical vulnerability published on July 9, 2024. A nested iframe, triggering a cross-site navigation, could send SameSite=Strict or Lax cookies. This vulnerability affects Firefox < 128 and Thunderbird < 128.

When was CVE-2024-6611 disclosed?

CVE-2024-6611 was first published in the National Vulnerability Database on July 9, 2024, with the most recent update on April 4, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2024-6611 actively exploited?

CVE-2024-6611 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 69.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2024-6611?

CVE-2024-6611 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2024-6611?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-6611, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2024-6611

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