CVE-2025-1933
published 2025-03-04CVE-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…
PriorityP334high7.6CVSS 3.1
AVNACLPRNUIRSUCLILAH
EPSS
0.29%
21.4th percentile
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
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | < firefox 136.0-1 (sid) | firefox 136.0-1 (sid) |
| debian | firefox-esr | < firefox 136.0-1 (sid) | firefox 136.0-1 (sid) |
| debian | thunderbird | < firefox 136.0-1 (sid) | firefox 136.0-1 (sid) |
| mozilla | firefox | < 115.21.0 | 115.21.0 |
| mozilla | firefox | < 136.0 | 136.0 |
| mozilla | firefox | — | — |
| mozilla | firefox | >= 0 < 136.0+build3-0ubuntu0.20.04.1 | 136.0+build3-0ubuntu0.20.04.1 |
| mozilla | firefox | >= 116.0 < 128.8.0 | 128.8.0 |
| mozilla | thunderbird | < 128.8 | 128.8 |
| mozilla | thunderbird | >= 0 < 1:128.8.0esr-1~deb11u1 | 1:128.8.0esr-1~deb11u1 |
| mozilla | thunderbird | >= 0 < 1:128.8.0esr-1~deb12u1 | 1:128.8.0esr-1~deb12u1 |
| mozilla | thunderbird | >= 0 < 1:128.8.0esr-1 | 1:128.8.0esr-1 |
| mozilla | thunderbird | >= 0 < 1:128.8.0esr-1 | 1:128.8.0esr-1 |
| mozilla | thunderbird | >= 129.0 < 136.0 | 136.0 |
CVSS provenance
nvdv3.17.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
osv7.6HIGH
vendor_debian7.6HIGH
vendor_redhat7.6HIGH
vendor_ubuntu7.5HIGH
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OSV
firefox vulnerabilities
osv·2025-03-06·CVSS 7.5
CVE-2025-1933 [HIGH] firefox vulnerabilities
firefox vulnerabilities
Multiple security issues were discovered in Firefox. If a user were
tricked into opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, obtain sensitive
information across domains, or execute arbitrary code. (CVE-2025-1933,
CVE-2025-1934, CVE-2025-1935, CVE-2025-1936, CVE-2025-1937, CVE-2025-1942)
It was discovered that Firefox did not properly handle WebTransport
connection, leading to a use-after-free vulnerability. An attacker could
potentially exploit this issue to cause a denial of service.
(CVE-2025-1931)
Ivan Fratric discovered that Firefox did not properly handle XSLT sorting,
leading to a out-of-bounds access vulnerability. An attacker could
potentially exploit this issue to cause a denial of servic
GHSA
GHSA-r84f-4wj3-r6vx: On 64-bit CPUs, when the JIT compiles WASM i32 return values they can pick up bits from left over memory
ghsa_unreviewed·2025-03-04
CVE-2025-1933 [HIGH] CWE-252 GHSA-r84f-4wj3-r6vx: On 64-bit CPUs, when the JIT compiles WASM i32 return values they can pick up bits from left over memory
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 affects Firefox < 136, Firefox ESR < 115.21, and Firefox ESR < 128.8.
OSV
CVE-2025-1933: On 64-bit CPUs, when the JIT compiles WASM i32 return values they can pick up bits from left over memory
osv·2025-03-04·CVSS 7.6
CVE-2025-1933 [HIGH] CVE-2025-1933: On 64-bit CPUs, when the JIT compiles WASM i32 return values they can pick up bits from left over memory
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 affects Firefox < 136, Firefox ESR < 115.21, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird < 128.8.
Ubuntu
Thunderbird vulnerabilities
vendor_ubuntu·2025-07-22
CVE-2025-4083 Thunderbird vulnerabilities
Title: Thunderbird vulnerabilities
Summary: Several security issues were fixed in Thunderbird.
Multiple security issues were discovered in Thunderbird. If a user were
tricked into opening a specially crafted website in a browsing context, an
attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, bypass security restrictions, cross-site
tracing, or execute arbitrary code.
Instructions: This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart thunderbird to
make all the necessary changes.
Ubuntu
Firefox vulnerabilities
vendor_ubuntu·2025-03-06·CVSS 7.5
CVE-2025-1932 [HIGH] Firefox vulnerabilities
Title: Firefox vulnerabilities
Summary: Several security issues were fixed in Firefox.
Multiple security issues were discovered in Firefox. If a user were
tricked into opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, obtain sensitive
information across domains, or execute arbitrary code. (CVE-2025-1933,
CVE-2025-1934, CVE-2025-1935, CVE-2025-1936, CVE-2025-1937, CVE-2025-1942)
It was discovered that Firefox did not properly handle WebTransport
connection, leading to a use-after-free vulnerability. An attacker could
potentially exploit this issue to cause a denial of service.
(CVE-2025-1931)
Ivan Fratric discovered that Firefox did not properly handle XSLT sorting,
leading to a out-of-bounds access vulnerability. An attacker
Red Hat
firefox: JIT corruption of WASM i32 return values on 64-bit CPUs
vendor_redhat·2025-03-04·CVSS 7.6
CVE-2025-1933 [HIGH] CWE-843 firefox: JIT corruption of WASM i32 return values on 64-bit CPUs
firefox: JIT corruption of WASM i32 return values on 64-bit CPUs
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 affects Firefox < 136, Firefox ESR < 115.21, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird < 128.8.
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: 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.
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package: firefox (Red Hat
Debian
CVE-2025-1933: firefox - On 64-bit CPUs, when the JIT compiles WASM i32 return values they can pick up bi...
vendor_debian·2025·CVSS 7.6
CVE-2025-1933 [HIGH] CVE-2025-1933: firefox - On 64-bit CPUs, when the JIT compiles WASM i32 return values they can pick up bi...
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 affects Firefox < 136, Firefox ESR < 115.21, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird < 128.8.
Scope: local
sid: resolved (fixed in 136.0-1)
Mozilla
Mozilla Foundation Security Advisory 2025-18: CVE-2025-1933
vendor_mozilla·CVSS 7.6
CVE-2025-1933 [HIGH] Mozilla Foundation Security Advisory 2025-18: CVE-2025-1933
Mozilla Foundation Security Advisory 2025-18
CVE: CVE-2025-1933
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 128.8
Mozilla
Mozilla Foundation Security Advisory 2025-15: CVE-2025-1933
vendor_mozilla·CVSS 7.6
CVE-2025-1933 [HIGH] Mozilla Foundation Security Advisory 2025-15: CVE-2025-1933
Mozilla Foundation Security Advisory 2025-15
CVE: CVE-2025-1933
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 115.21
Mozilla
Mozilla Foundation Security Advisory 2025-16: CVE-2025-1933
vendor_mozilla·CVSS 7.6
CVE-2025-1933 [HIGH] Mozilla Foundation Security Advisory 2025-16: CVE-2025-1933
Mozilla Foundation Security Advisory 2025-16
CVE: CVE-2025-1933
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 128.8
Mozilla
Mozilla Foundation Security Advisory 2025-17: CVE-2025-1933
vendor_mozilla·CVSS 7.6
CVE-2025-1933 [HIGH] Mozilla Foundation Security Advisory 2025-17: CVE-2025-1933
Mozilla Foundation Security Advisory 2025-17
CVE: CVE-2025-1933
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 136
Mozilla
Mozilla Foundation Security Advisory 2025-14: CVE-2025-1933
vendor_mozilla·CVSS 7.6
CVE-2025-1933 [HIGH] Mozilla Foundation Security Advisory 2025-14: CVE-2025-1933
Mozilla Foundation Security Advisory 2025-14
CVE: CVE-2025-1933
Product: Firefox
Impact: high
Fixed in: Firefox 136
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://bugzilla.mozilla.org/show_bug.cgi?id=1946004https://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
2025-03-04
Published