CVE-2026-87724
Quick assessment
Affected
torprject Tor
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.
在 0.4.9.12 之前的 Tor 版本中，即使未发送 CC_REQUEST，Tor 仍会解析 CC_RESPONSE 扩展字段，这使得远程攻击者能够导致拒绝服务（程序崩溃），原因是拥塞控制状态发生损坏。该漏洞的编号为 TROVE-2026-032。
Possible ATT&CK Techniques 2 AI
T1497 · Virtualization/Sandbox Evasion T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2026-87724
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Tor before 0.4.9.12 interprets the CC_RESPONSE extension even when CC_REQUEST was not sent, which allows remote attackers to cause a denial of service (crash) because of corrupted congestion-control state. This is TROVE-2026-032.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在范围间的资源转移不正确
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-87724
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Patches & Fixes for CVE-2026-87724 (1)
Other References for CVE-2026-87724 (1)
IV. Related Vulnerabilities
V. Comments for CVE-2026-87724
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