Ref# ADV2025_217 | Date: Jul 22nd 2025

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Mozilla has published a security advisory highlighting vulnerabilities in the following products on July 22nd, 2025. It is recommended that you take the necessary precautions by ensuring your products are always updated. 

• Firefox for iOS – versions prior to 141 
• Firefox ESR – versions prior to 140.1 
• Firefox ESR – versions prior to 128.13 
• Firefox ESR – versions prior to 115.26 
• Firefox – versions prior to 141 

For more information on these updates, you can follow these URLs: 

• Mozilla Foundation Security Advisory MFSA 2025-60 
• Mozilla Foundation Security Advisory MFSA 2025-59 
• Mozilla Foundation Security Advisory MFSA 2025-58 
• Mozilla Foundation Security Advisory MFSA 2025-57 
• Mozilla Foundation Security Advisory MFSA 2025-56 
• Mozilla Security Advisories 

The Guyana National CIRT recommends that users and administrators review these updates and apply them where necessary. 

PDF Download: Mozilla Security Advisory

References 

• Mozilla Security Advisories. (July 22nd, 2025). Retrieved from Mozilla. https://www.mozilla.org/en-US/security/advisories/  

• Mozilla Security Advisory. (July 22nd, 2025). Retrieved from Canadian Centre for Cyber Security. https://www.cyber.gc.ca/en/alerts-advisories/mozilla-security-advisory-av25-442