Advisory Published

MFSA2025-19: Security Vulnerability fixed in Firefox 136.0.4, Firefox ESR 128.8.1, Firefox ESR 115.21.1

First published: Thu Mar 27 2025(Updated: )

Security Vulnerability fixed in Firefox 136.0.4, Firefox ESR 128.8.1, Firefox ESR 115.21.1

Affected SoftwareAffected VersionHow to fix
Firefox<136.0.4
136.0.4
Firefox ESR<115.21.1
115.21.1
Firefox ESR<128.8.1
128.8.1

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Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of MFSA2025-19?

    MFSA2025-19 is classified as a high severity vulnerability that affects specific versions of Firefox and Firefox ESR.

  • How do I fix MFSA2025-19?

    To fix MFSA2025-19, update Firefox to version 136.0.4 or Firefox ESR to versions 128.8.1 or 115.21.1.

  • Which versions of Firefox are affected by MFSA2025-19?

    Firefox versions prior to 136.0.4 are affected by MFSA2025-19.

  • Which versions of Firefox ESR are impacted by MFSA2025-19?

    Firefox ESR versions prior to 128.8.1 and 115.21.1 are impacted by MFSA2025-19.

  • What types of issues does MFSA2025-19 address?

    MFSA2025-19 addresses security vulnerabilities that can potentially lead to data exposure or compromise.

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