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CVE-2021-41591

ACINQ Eclair before 0.6.3 allows loss of funds because of dust HTLC exposure.

9.4 Critical

ACINQ Eclair before 0.6.3 allows loss of funds because of dust HTLC exposure.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
High
Availability
High

Exploit likelihood

1.70%Up 0.7 points since Oct 5, 2021
90%50%10%1%

What each source reports

NVD Score used 9.4

ACINQ Eclair before 0.6.3 allows loss of funds because of dust HTLC exposure.

Record
CVE-2021-41591
CVSS 3.1
9.4 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-770
Updated
2026-11-02
CVE List No score

ACINQ Eclair before 0.6.3 allows loss of funds because of dust HTLC exposure.

Record
CVE-2021-41591
Updated
2026-11-02
EUVDEUVD-2021-28605 No score

ACINQ Eclair before 0.6.3 allows loss of funds because of dust HTLC exposure.

Record
EUVD-2021-28605
Updated
2026-11-03
GitHub AdvisoriesGHSA-r6qw-cx64-86rx 9.4

ACINQ Eclair before 0.6.3 allows loss of funds because of dust HTLC exposure.

ACINQ Eclair before 0.6.3 allows loss of funds because of dust HTLC exposure.

Record
GHSA-r6qw-cx64-86rx
CVSS 3.1
9.4 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
Weakness
CWE-863
Updated
2026-11-02

Affected products

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-41591 is a critical vulnerability (CVSS 9.4) in Acinq Eclair, published October 4, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.70%, the 77th percentile. No source names a fixed version.

References

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