CVE-2020-26974
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I. Basic Information for CVE-2020-26974
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
When flex-basis was used on a table wrapper, a StyleGenericFlexBasis object could have been incorrectly cast to the wrong type. This resulted in a heap user-after-free, memory corruption, and a potentially exploitable crash. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.
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 中存在缓冲区错误漏洞。当在表包装器上使用flex-basis时，StyleGenericFlexBasis对象可能会被错误地转换为错误的类型。这将导致堆用户释放、内存损坏和潜在可利用的崩溃。以下产品和版本受到影响：Firefox < 84、Thunderbird < 78.6和Firefox ESR < 78.6
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 ~ 84 | - | |
| Mozilla | Thunderbird | unspecified ~ 78.6 | - | |
| Mozilla | Firefox ESR | unspecified ~ 78.6 | - |
II. Public POCs for CVE-2020-26974
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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- https://www.mozilla.org/security/advisories/mfsa2020-54/x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2020-55/x_refsource_MISC
- https://bugzilla.mozilla.org/show_bug.cgi?id=1681022x_refsource_MISC
- https://www.mozilla.org/security/advisories/mfsa2020-56/x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2020-26974
Same Patch Batch · Mozilla · 2021-01-07 · 13 CVEs total
| CVE-2020-26971 | Mozilla Firefox 缓冲区错误漏洞 | |
| CVE-2020-26972 | Mozilla Firefox 资源管理错误漏洞 | |
| CVE-2020-26973 | Mozilla Firefox 安全漏洞 | |
| CVE-2020-26975 | Mozilla Firefox 安全漏洞 | |
| CVE-2020-26976 | Mozilla Firefox 安全漏洞 | |
| CVE-2020-26977 | Mozilla Firefox 安全漏洞 | |
| CVE-2020-26978 | Mozilla Firefox 信息泄露漏洞 | |
| CVE-2020-26979 | Mozilla Firefox 输入验证错误漏洞 | |
| CVE-2020-35111 | Mozilla Firefox 安全漏洞 | |
| CVE-2020-35112 | Mozilla Firefox 安全漏洞 | |
| CVE-2020-35113 | Mozilla Firefox 缓冲区错误漏洞 | |
| CVE-2020-35114 | 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-2020-26974
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