vulnerability
MFSA2025-15 Firefox: Security Vulnerabilities fixed in Firefox ESR 115.21 (CVE-2025-1933)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:M/Au:N/C:P/I:P/A:C) | Mar 4, 2025 | Mar 5, 2025 | Apr 15, 2026 |
Severity
8
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:C)
Published
Mar 4, 2025
Added
Mar 5, 2025
Modified
Apr 15, 2026
Description
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.
Solution
mozilla-firefox-esr-upgrade-115_21
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