Multiple vulnerabilities in Mozilla Firefox ESR

Description

Multiple vulnerabilities were found in Mozilla Firefox ESR. Malicious users can exploit these vulnerabilities to execute arbitrary code, cause denial of service, bypass security restrictions, gain privileges.

Below is a complete list of vulnerabilities:

1. Use after free vulnerability can be exploited to cause denial of service or execute arbitrary code.
2. Validation of untrusted input vulnerability can be exploited to bypass security restrictions.
3. An elevation of privilege vulnerability can be exploited remotely to gain privileges.
4. Use after free vulnerability in media can be exploited to cause denial of service or execute arbitrary code.
5. Memory safety vulnerability can be exploited to execute arbitrary code.

Original advisories

• MFSA2025-02

• MFSA2025-03

Related products

• Mozilla-Firefox-ESR

CVE list

• CVE-2025-0238
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• CVE-2025-0239
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• CVE-2025-0237
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• CVE-2025-0242
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• CVE-2025-0243
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• CVE-2025-0241
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• CVE-2025-0240
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Read more

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