CVE-2025-1933

On 64-bit CPUs, when the JIT compiles WASM i32 return values they can pick up bits from left over memory. This can potentially cause them to be treated as a different type. This vulnerability was fixed in Firefox 136, Firefox ESR 115.21, Firefox ESR 128.8, Thunderbird 136, and Thunderbird 128.8...

Mozilla Firefox ESR < 115.21

The version of Firefox ESR installed on the remote macOS or Mac OS X host is prior to 115.21. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-15 advisory. - Memory safety bugs present in Firefox 135, Thunderbird 135, Firefox ESR 115.20, Firefox ESR 128.7, and...