CVE-2021-41592
CRITICALCVSS 9.4/10EPSS 1.50%
Last modified
CVE-2021-41592 is a critical-severity vulnerability rated 9.4/10 on the CVSS scale. Blockstream c-lightning through 0.10.1 allows loss of funds because of dust HTLC exposure.. EPSS estimates a 1.50% chance of exploitation in the next 30 days.
Description
Blockstream c-lightning through 0.10.1 allows loss of funds because of dust HTLC exposure.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Elementsproject | C-Lightning | <= 0.10.1 |
References
- https://bitcoinmagazine.com/technical/good-griefing-a-lingering-vulnerability-on-lightning-network-that-still-needs-fixingPress/Media Coverage, Third Party Advisory
- https://github.com/ElementsProject/lightningThird Party Advisory
- https://lists.linuxfoundation.org/pipermail/lightning-dev/2020-May/002714.htmlMailing List, Vendor Advisory
- https://lists.linuxfoundation.org/pipermail/lightning-dev/2021-October/003257.htmlMailing List, Mitigation, Vendor Advisory
- https://lists.linuxfoundation.org/pipermail/lightning-dev/2021-October/003264.htmlMailing List, Vendor Advisory
- https://bitcoinmagazine.com/technical/good-griefing-a-lingering-vulnerability-on-lightning-network-that-still-needs-fixingPress/Media Coverage, Third Party Advisory
- https://github.com/ElementsProject/lightningThird Party Advisory
- https://lists.linuxfoundation.org/pipermail/lightning-dev/2020-May/002714.htmlMailing List, Vendor Advisory
- https://lists.linuxfoundation.org/pipermail/lightning-dev/2021-October/003257.htmlMailing List, Mitigation, Vendor Advisory
- https://lists.linuxfoundation.org/pipermail/lightning-dev/2021-October/003264.htmlMailing List, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-41592?
Blockstream c-lightning through 0.10.1 allows loss of funds because of dust HTLC exposure.
How severe is CVE-2021-41592?
CVE-2021-41592 has a CVSS score of 9.4/10 (CRITICAL severity). The EPSS model estimates a 1.50% probability of exploitation in the next 30 days.
How do I fix CVE-2021-41592?
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-2021-41592?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST