CVE-2023-6207
Quick assessment
Affected
Mozilla Firefox
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Mozilla Firefox是美国Mozilla基金会的一款开源Web浏览器。 Mozilla Firefox 120之前版本、Firefox ESR 115.5之前版本和Thunderbird 115.5.0之前版本存在安全漏洞，该漏洞源于ReadableByteStreams中存在释放后重用漏洞。
Possible ATT&CK Techniques 1 AI
T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2023-6207
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Ownership mismanagement led to a use-after-free in ReadableByteStreams This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Mozilla Firefox 安全漏洞
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 120之前版本、Firefox ESR 115.5之前版本和Thunderbird 115.5.0之前版本存在安全漏洞，该漏洞源于ReadableByteStreams中存在释放后重用漏洞。
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 ~ 120 | - |
|
| Mozilla | Firefox ESR | unspecified ~ 115.5.0 | - |
|
| Mozilla | Thunderbird | unspecified ~ 115.5 | - |
|
II. Public POCs for CVE-2023-6207
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2023-6207 (4)
Mailing List Discussions for CVE-2023-6207 (2)
Same Patch Batch · Mozilla · 2023-11-21 · 12 CVEs total
| CVE-2023-49061 | Mozilla Firefox 安全漏洞 | |
| CVE-2023-49060 | Mozilla Firefox 安全漏洞 | |
| CVE-2023-6212 | Mozilla Firefox 安全漏洞 | |
| CVE-2023-6213 | Mozilla Firefox 安全漏洞 | |
| CVE-2023-6209 | Mozilla Firefox 安全漏洞 | |
| CVE-2023-6210 | Mozilla Firefox 安全漏洞 | |
| CVE-2023-6211 | Mozilla Firefox 安全漏洞 | |
| CVE-2023-6205 | Mozilla Firefox 安全漏洞 | |
| CVE-2023-6206 | Mozilla Firefox 安全漏洞 | |
| CVE-2023-6208 | Mozilla Firefox 安全漏洞 | |
| CVE-2023-6204 | Mozilla Firefox 安全漏洞 |
IV. Related Vulnerabilities
Same product: Firefox
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CVE-2026-100832
Use-after-free in the Graphics: Canvas2D component -
CVE-2026-100830
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CVE-2026-100829
Mitigation bypass in the DOM: Security component -
CVE-2026-100828
Mitigation bypass in the Bookmarks & History component
Same vendor: Mozilla
-
CVE-2026-103500
Heap buffer overflow opening large email -
CVE-2026-100832
Use-after-free in the Graphics: Canvas2D component -
CVE-2026-100830
Mitigation bypass in the DOM: Navigation component -
CVE-2026-100831
Use-after-free in the DOM: UI Events & Focus Handling compon -
CVE-2026-100829
Mitigation bypass in the DOM: Security component
V. Comments for CVE-2023-6207
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