CVE-2025-1933
Mozilla Firefox WASM JIT Type Confusion Vulnerability
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 affects Firefox < 136, Firefox ESR < 115.21, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird < 128.8.
INFO
Published Date :
March 4, 2025, 2:15 p.m.
Last Modified :
April 3, 2025, 1:29 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
4.7
Exploitability Score :
2.8
Affected Products
The following products are affected by CVE-2025-1933
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-1933.
| URL | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1946004 | Issue Tracking |
| https://www.mozilla.org/security/advisories/mfsa2025-14/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-15/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-16/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-17/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-18/ | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-1933 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-1933 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 03, 2025
Action Type Old Value New Value Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* versions from (including) 129.0 up to (excluding) 136.0 *cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* versions up to (excluding) 136.0 *cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* versions up to (excluding) 115.21.0 *cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* versions from (including) 116.0 up to (excluding) 128.8.0 *cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* versions up to (excluding) 128.8 Added Reference Type Mozilla Corporation: https://bugzilla.mozilla.org/show_bug.cgi?id=1946004 Types: Issue Tracking Added Reference Type Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2025-14/ Types: Vendor Advisory Added Reference Type Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2025-15/ Types: Vendor Advisory Added Reference Type Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2025-16/ Types: Vendor Advisory Added Reference Type Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2025-17/ Types: Vendor Advisory Added Reference Type Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2025-18/ Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Mar. 25, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Mar. 12, 2025
Action Type Old Value New Value Removed CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H Removed CWE CWE-252 -
CVE Modified by [email protected]
Mar. 05, 2025
Action Type Old Value New Value Changed 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 affects Firefox < 136, Firefox ESR < 115.21, and Firefox ESR < 128.8. 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. Added Reference https://www.mozilla.org/security/advisories/mfsa2025-17/ Added Reference https://www.mozilla.org/security/advisories/mfsa2025-18/ -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Mar. 04, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H Added CWE CWE-252 -
New CVE Received by [email protected]
Mar. 04, 2025
Action Type Old Value New Value Added 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 affects Firefox < 136, Firefox ESR < 115.21, and Firefox ESR < 128.8. Added Reference https://bugzilla.mozilla.org/show_bug.cgi?id=1946004 Added Reference https://www.mozilla.org/security/advisories/mfsa2025-14/ Added Reference https://www.mozilla.org/security/advisories/mfsa2025-15/ Added Reference https://www.mozilla.org/security/advisories/mfsa2025-16/
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-1933 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-1933
weaknesses.