CVE-2026-87724
6.5
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| torprject | Tor | 0.4.9.3-alpha < 0.4.9.12 | affected |
Weaknesses
- CWE-669: CWE-669 Incorrect Resource Transfer Between Spheres
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
- https://gitlab.torproject.org/tpo/core/tor/-/raw/tor-0.4.9.12/ChangeLog
- https://gitlab.com/torproject/tor/-/commit/10d4b8ffefa7c00aab2b631ed7e7f15e42cd012d
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