CVE-2021-23987
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I. Basic Information for CVE-2021-23987
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
Mozilla developers and community members reported memory safety bugs present in Firefox 86 and Firefox ESR 78.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.
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 缓冲区错误漏洞
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 存在缓冲区错误漏洞，目前尚无此漏洞的相关信息，请随时关注CNNVD或厂商公告。
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 ESR | unspecified ~ 78.9 | - | |
| Mozilla | Firefox | unspecified ~ 87 | - | |
| Mozilla | Thunderbird | unspecified ~ 78.9 | - |
II. Public POCs for CVE-2021-23987
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
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- https://www.mozilla.org/security/advisories/mfsa2021-12/x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2021-10/x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2021-11/x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-23987
Same Patch Batch · Mozilla · 2021-03-31 · 8 CVEs total
| CVE-2021-23981 | Mozilla Firefox 缓冲区错误漏洞 | |
| CVE-2021-23982 | Mozilla Firefox 加密问题漏洞 | |
| CVE-2021-23983 | Mozilla Firefox 缓冲区错误漏洞 | |
| CVE-2021-23984 | Mozilla Firefox 安全漏洞 | |
| CVE-2021-23985 | Mozilla Firefox 安全漏洞 | |
| CVE-2021-23986 | Mozilla Firefox 访问控制错误漏洞 | |
| CVE-2021-23988 | Mozilla Firefox 缓冲区错误漏洞 |
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-2021-23987
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