CVE-2021-38496
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I. Basic Information for CVE-2021-38496
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
During operations on MessageTasks, a task may have been removed while it was still scheduled, resulting in memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.15, Thunderbird < 91.2, Firefox ESR < 91.2, Firefox ESR < 78.15, and Firefox < 93.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Mozilla Firefox MessageTask 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mozilla Firefox是美国Mozilla基金会的一款开源Web浏览器。 Mozilla Firefox MessageTask 存在资源管理错误漏洞，该漏洞源于在对MessageTasks进行操作期间，任务可能已在其仍处于计划状态时被删除，从而导致内存损坏和可能被利用的崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Mozilla | Thunderbird | unspecified ~ 78.15 | - | |
| Mozilla | Firefox ESR | unspecified ~ 91.2 | - | |
| Mozilla | Firefox | unspecified ~ 93 | - |
II. Public POCs for CVE-2021-38496
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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- https://www.mozilla.org/security/advisories/mfsa2021-44/x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2021-45/x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2021-46/x_refsource_MISC
- https://bugzilla.mozilla.org/show_bug.cgi?id=1725335x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2021-43/x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2021-47/x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-38496
Same Patch Batch · Mozilla · 2021-11-03 · 14 CVEs total
| CVE-2021-38502 | Mozilla Thunderbird 安全漏洞 | |
| CVE-2021-38501 | Mozilla Firefox 缓冲区错误漏洞 | |
| CVE-2021-38500 | Mozilla Firefox 缓冲区错误漏洞 | |
| CVE-2021-38499 | Mozilla Firefox 缓冲区错误漏洞 | |
| CVE-2021-38498 | Mozilla Firefox 资源管理错误漏洞 | |
| CVE-2021-38497 | Mozilla Firefox 访问控制错误漏洞 | |
| CVE-2021-38495 | Mozilla Firefox 缓冲区错误漏洞 | |
| CVE-2021-38494 | Mozilla Firefox 缓冲区错误漏洞 | |
| CVE-2021-38493 | Mozilla Firefox 缓冲区错误漏洞 | |
| CVE-2021-38492 | Mozilla Firefox 输入验证错误漏洞 | |
| CVE-2021-38491 | Mozilla Firefox 权限许可和访问控制问题漏洞 | |
| CVE-2021-29993 | Mozilla Firefox 权限许可和访问控制问题漏洞 | |
| CVE-2021-29991 | Mozilla Firefox和Mozilla Thunderbird 安全漏洞 |
IV. Related Vulnerabilities
Same vendor: Mozilla
- CVE-2026-8093
Memory safety bugs fixed in Thunderbird 150.0.2 - CVE-2026-8094
Other issue in the WebRTC component - CVE-2026-8092
Memory safety bugs fixed in Thunderbird ESR 140.10.2 and Thu - CVE-2026-8091
Incorrect boundary conditions in the Audio/Video: Playback c - CVE-2026-8090
Use-after-free in the DOM: Networking component
V. Comments for CVE-2021-38496
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