Cyber Resilience

CVE-2024-6611

Mozilla Firefox ≤ 128.0

Published
09 July 2024
Modified
04 April 2025
Patch / advisory
View advisory
CVSS Score v3.1 9.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0066 48th percentile
Risk Priority 72 floored blend · peak EPSS

Summary

CVE-2024-6611 is a critical-severity Sensitive Cookie with Improper SameSite Attribute (CWE-1275) vulnerability in Mozilla Firefox. Its CVSS base score is 9.8 (Critical).

Operationally, ranked at the 48th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to CM-6 (Configuration Settings) and SC-23 (Session Authenticity) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

A01:2025 Broken Access Control

EU & UK References

Vulnerability Data

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

CWE(s)
CWE-1275

Related Threats

CVEs Like This One

CVE-2026-16393Same product: Mozilla Firefox
CVE-2026-12291Same product: Mozilla Firefox
CVE-2024-2612Same product: Mozilla Firefox
CVE-2026-4727Same product: Mozilla Firefox
CVE-2024-10466Same product: Mozilla Firefox
CVE-2026-12293Same product: Mozilla Firefox
CVE-2025-4089Same product: Mozilla Firefox
CVE-2024-3854Same product: Mozilla Firefox
CVE-2026-16392Same product: Mozilla Firefox
CVE-2026-16360Same product: Mozilla Firefox

Affected Assets

mozilla
firefox
≤ 128.0
mozilla
thunderbird
≤ 128.0

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V3.3.2

Mitigating Controls (NIST 800-53 r5) AI

CM-6 Configuration Settings good match

Establishing secure configuration settings for web components includes requiring appropriate SameSite attributes on sensitive cookies.

SC-23 Session Authenticity good match

Proper SameSite settings on session cookies directly help protect the authenticity of communications sessions against cross-site misuse.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-01 mostly match
prevents

Secure configuration baselines and enforcement directly require proper SameSite settings on sensitive cookies.

PR.PS-06 mostly match
prevents

Secure SDLC practices include coding standards and reviews that mandate correct SameSite attributes.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing can detect missing SameSite attributes but does not prevent the weakness.

A.8.26 Application security requirements partial match
prevents

Application security requirements can mandate SameSite attributes on sensitive cookies.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly require proper SameSite settings to prevent CSRF.

References