CVE-2018-25021
HIGHCVSS 7.5/10EPSS 2.27%
Last modified
CVE-2018-25021 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The TCP Server module in toxcore before 0.2.8 doesn't free the TCP priority queue under certain conditions, which allows a remote attacker to exhaust the system's memory, causing a denial of service (DoS).. EPSS estimates a 2.27% chance of exploitation in the next 30 days.
Description
The TCP Server module in toxcore before 0.2.8 doesn't free the TCP priority queue under certain conditions, which allows a remote attacker to exhaust the system's memory, causing a denial of service (DoS).
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Toktok | Toxcore | < 0.2.8 |
References
- https://blog.tox.chat/2018/10/memory-leak-bug-and-new-toxcore-release-fixing-it/Third Party Advisory
- https://github.com/TokTok/c-toxcore/issues/1214Exploit, Third Party Advisory
- https://github.com/TokTok/c-toxcore/pull/1216Third Party Advisory
- https://blog.tox.chat/2018/10/memory-leak-bug-and-new-toxcore-release-fixing-it/Third Party Advisory
- https://github.com/TokTok/c-toxcore/issues/1214Exploit, Third Party Advisory
- https://github.com/TokTok/c-toxcore/pull/1216Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-25021?
The TCP Server module in toxcore before 0.2.8 doesn't free the TCP priority queue under certain conditions, which allows a remote attacker to exhaust the system's memory, causing a denial of service (DoS).
How severe is CVE-2018-25021?
CVE-2018-25021 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.27% probability of exploitation in the next 30 days.
How do I fix CVE-2018-25021?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2018-25021?
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Scan your code nowSource: NVD / NIST