{"id":"CVE-2025-1933","state":"PUBLISHED","title":"JIT corruption of WASM i32 return values on 64-bit CPUs","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.","publishedAt":"2025-03-04T13:31:23.856Z","updatedAt":"2026-06-04T14:47:53.955Z","severity":{"score":7.6,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H","source":"CISA-ADP"},"assigner":"mozilla","products":["Mozilla Firefox","Mozilla Thunderbird"],"affected":[{"vendor":"Mozilla","product":"Firefox","versions":[{"version":"115.21","status":"unaffected","lessThanOrEqual":"115.*","versionType":"rpm"},{"version":"128.8","status":"unaffected","lessThanOrEqual":"128.*","versionType":"rpm"},{"version":"136","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]},{"vendor":"Mozilla","product":"Thunderbird","versions":[{"version":"128.8","status":"unaffected","lessThanOrEqual":"128.*","versionType":"rpm"},{"version":"136","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]}],"references":["https://bugzilla.mozilla.org/show_bug.cgi?id=1946004","https://www.mozilla.org/security/advisories/mfsa2025-14/","https://www.mozilla.org/security/advisories/mfsa2025-15/","https://www.mozilla.org/security/advisories/mfsa2025-16/","https://www.mozilla.org/security/advisories/mfsa2025-17/","https://www.mozilla.org/security/advisories/mfsa2025-18/","https://lists.debian.org/debian-lts-announce/2025/03/msg00006.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:08:39.238Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/1xxx/CVE-2025-1933.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-1933","state":"PUBLISHED","datePublished":"2025-03-04T13:31:23.856Z","dateUpdated":"2026-06-04T14:47:53.955Z","assignerShortName":"mozilla","assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateReserved":"2025-03-04T12:29:32.686Z"},"containers":{"cna":{"title":"JIT corruption of WASM i32 return values on 64-bit CPUs","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Mozilla","product":"Firefox","versions":[{"version":"115.21","status":"unaffected","lessThanOrEqual":"115.*","versionType":"rpm"},{"version":"128.8","status":"unaffected","lessThanOrEqual":"128.*","versionType":"rpm"},{"version":"136","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]},{"vendor":"Mozilla","product":"Thunderbird","versions":[{"version":"128.8","status":"unaffected","lessThanOrEqual":"128.*","versionType":"rpm"},{"version":"136","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1946004"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-14/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-15/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-16/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-17/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-18/"}],"providerMetadata":{"shortName":"mozilla","orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateUpdated":"2026-04-13T14:27:38.226Z"},"credits":[{"lang":"en","value":"Xiangwei Zhang and kkdong of Tencent Security YUNDING LAB"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.6,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H","integrityImpact":"LOW","userInteraction":"REQUIRED","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-03-04T15:58:36.269836Z","id":"CVE-2025-1933","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"type":"CWE","lang":"en","description":"CWE-noinfo Not enough information"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-04T14:47:53.955Z"}},{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00006.html"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2025-11-03T20:57:18.028Z"}}]}}}