CVE-2021-41593

CVE-2021-41593 is a high-severity vulnerability in Lightning Network Daemon Project Lightning Network Daemon with a CVSS 3.x base score of 8.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-770.

Key facts

Description

Lightning Labs lnd before 0.13.3-beta allows loss of funds because of dust HTLC exposure.

Frequently asked questions

What is CVE-2021-41593?
Lightning Labs lnd before 0.13.3-beta allows loss of funds because of dust HTLC exposure.
How severe is CVE-2021-41593?
CVE-2021-41593 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability low.
Is CVE-2021-41593 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41593?
CVE-2021-41593 primarily affects Lightning Network Daemon Project Lightning Network Daemon. In total, 38 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-41593?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-41593 published?
CVE-2021-41593 was published on 2021-10-04 and last updated on 2026-06-17.

References

Affected products (38)

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