CVE-2012-3963
Use-after-free vulnerability in the js::gc::MapAllocToTraceKind function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7,...
Affects 14 products across 5 vendors.
Software references memory after it has been freed, leading to corruption, crashes, or code execution.
This vulnerability was disclosed in 2012. A critical vulnerability affects Canonical systems (CVE-2012-3963). No public exploit code is currently available. Isolate affected systems if patching is not feasible.
BSID: BS-2012-GLOBAL-091923-C • Model: rule-based-v1 • Confidence: MEDIUM
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| CVE ID | CVE-2012-3963 |
|---|---|
| BSID | BS-2012-GLOBAL-091923-C BreachSpider Global ID |
| CVSS Vector | AV:N/AC:L/Au:N/C:C/I:C/A:C |
| Published | 2012-08-29 |
| Last Modified | 2026-06-16 |
| ICS Relevance | 0% |
| Weakness (CWE) | |
| Source | NVD |
Use-after-free vulnerability in the js::gc::MapAllocToTraceKind function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to execute arbitrary code via unspecified vectors.
Source: NIST NVD / MITRE CVE Database
Vulnerability details: Use-after-free vulnerability in the js::gc::MapAllocToTraceKind function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to execute arbitrary code via unspecified vectors. CVSS vector: AV:N/AC:L/Au:N/C:C/I:C/A:C.
Exploitation Likelihood: LOW
| Vendor | Product | Affected Versions |
|---|---|---|
| Canonical | Ubuntu Linux | 10.04 11.04 11.10 12.04 |
| Mozilla | Thunderbird Esr | ≥ 10.0, < 10.0.7 |
| Mozilla | Firefox | < 15.0 |
| Mozilla | Thunderbird | < 15.0 |
| Mozilla | Seamonkey | < 2.12 |
| Opensuse | Opensuse | 12.2 |
| Redhat | Enterprise Linux Desktop | 5.0 6.0 |
| Redhat | Enterprise Linux Server | 5.0 6.0 |
| Redhat | Enterprise Linux Workstation | 5.0 6.0 |
| Redhat | Enterprise Linux Eus | 6.3 |
| Redhat | Enterprise Linux Server Eus | 6.3 |
| Suse | Linux Enterprise Software Development Kit | 11 |
| Suse | Linux Enterprise Server | 10 11 |
| Suse | Linux Enterprise Desktop | 10 11 |
| CISA known-exploited | Not in KEV catalog |
|---|---|
| Public Exploit | Not confirmed |
| PoC Code | Not confirmed |
AI Enrichment Record — provenance & audit hash
| Model | rule-based-v1 |
|---|---|
| Confidence | MEDIUM |
| Enriched At | 2026-05-24 |
| SHA-512 Audit Hash | 52c387591e6fb6f1a0dbd4474d975c4f2dd2200a9747e1ec33c235dc0937d635e477715dc3003ae19fe96d161d5fb3af2e3f8d1e6fa35bafa0474d53fa7a1836 |
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