CVE-2021-29981
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I. Basic Information for CVE-2021-29981
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
An issue present in lowering/register allocation could have led to obscure but deterministic register confusion failures in JITted code that would lead to a potentially exploitable crash. This vulnerability affects Firefox < 91 and Thunderbird < 91.
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和Mozilla Thunderbird输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mozilla Firefox和Mozilla Thunderbird都是美国Mozilla基金会的产品。Mozilla Firefox是一款开源Web浏览器。Mozilla Thunderbird是一套从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 Firefox和Mozilla Thunderbird存在输入验证错误漏洞，该漏洞的存在是由于在实时范围分割期间降低寄存器分配时，对用户提供的输入验证
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 | Firefox | unspecified ~ 91 | - | |
| Mozilla | Thunderbird | unspecified ~ 91 | - |
II. Public POCs for CVE-2021-29981
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
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- https://www.mozilla.org/security/advisories/mfsa2021-36/x_refsource_MISC
- https://bugzilla.mozilla.org/show_bug.cgi?id=1707774x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2021-33/x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-29981
Same Patch Batch · Mozilla · 2021-08-17 · 11 CVEs total
| CVE-2021-29990 | Mozilla Firefox 缓冲区错误漏洞 | |
| CVE-2021-29989 | Mozilla Firefox 缓冲区错误漏洞 | |
| CVE-2021-29988 | Mozilla Firefox 缓冲区错误漏洞 | |
| CVE-2021-29987 | Mozilla Firefox 安全漏洞 | |
| CVE-2021-29986 | Mozilla Firefox 竞争条件问题漏洞 | |
| CVE-2021-29985 | Mozilla Firefox 资源管理错误漏洞 | |
| CVE-2021-29984 | Mozilla Firefox 缓冲区错误漏洞 | |
| CVE-2021-29983 | Mozilla Firefox 资源管理错误漏洞 | |
| CVE-2021-29982 | Mozilla Firefox和Mozilla Thunderbird 安全漏洞 | |
| CVE-2021-29980 | Mozilla Firefox 缓冲区错误漏洞 |
IV. Related Vulnerabilities
Same product: Firefox
- 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
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-2021-29981
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