CVE-2021-4126
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I. Basic Information for CVE-2021-4126
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
When receiving an OpenPGP/MIME signed email message that contains an additional outer MIME message layer, for example a message footer added by a mailing list gateway, Thunderbird only considered the inner signed message for the signature validity. This gave the false impression that the additional contents were also covered by the digital signature. Starting with Thunderbird version 91.4.1, only the signature that belongs to the top level MIME part will be considered for the displayed status. This vulnerability affects Thunderbird < 91.4.1.
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 Thunderbird 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mozilla Thunderbird是美国Mozilla基金会的一套从Mozilla Application Suite独立出来的电子邮件客户端软件。该软件支持IMAP、POP邮件协议以及HTML邮件格式。 Mozilla Thunderbird 存在安全漏洞，攻击者可利用该漏洞通过OpenPGP签名状态附加内容使用Mozilla Thunderbird上的恶意数据，以欺骗受害者。
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 ~ 91.4.1 | - |
II. Public POCs for CVE-2021-4126
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Mozilla · 2022-12-22 · 175 CVEs total
| CVE-2022-36319 | Mozilla Firefox 安全漏洞 | |
| CVE-2022-34481 | Mozilla Firefox 输入验证错误漏洞 | |
| CVE-2022-34482 | Mozilla Firefox 安全漏洞 | |
| CVE-2022-34483 | Mozilla Firefox 安全漏洞 | |
| CVE-2022-34484 | Mozilla Firefox 资源管理错误漏洞 | |
| CVE-2022-34485 | Mozilla Firefox 缓冲区错误漏洞 | |
| CVE-2022-36314 | Mozilla Firefox 代码问题漏洞 | |
| CVE-2022-36315 | Mozilla Firefox 资源管理错误漏洞 | |
| CVE-2022-36316 | Mozilla Firefox 输入验证错误漏洞 | |
| CVE-2022-36317 | Mozilla Firefox 输入验证错误漏洞 | |
| CVE-2022-36318 | Mozilla Firefox 竞争条件问题漏洞 | |
| CVE-2022-38475 | Mozilla Firefox 安全漏洞 | |
| CVE-2022-40957 | Mozilla Firefox 安全漏洞 | |
| CVE-2022-40956 | Mozilla Firefox 跨站脚本漏洞 | |
| CVE-2022-38478 | Mozilla Firefox 缓冲区错误漏洞 | |
| CVE-2022-38477 | Mozilla Firefox 缓冲区错误漏洞 | |
| CVE-2022-38476 | Mozilla Firefox ESR 资源管理错误漏洞 | |
| CVE-2022-38473 | Mozilla Firefox 安全漏洞 | |
| CVE-2022-36320 | Mozilla Firefox 缓冲区错误漏洞 | |
| CVE-2022-38472 | Mozilla Firefox 访问控制错误漏洞 |
Showing top 20 of 175 CVEs. View all on vendor page → →
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-2021-4126
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