9.4
CRITICAL
CVE-2021-41591
ACINQ Eclair Off-Chain Payment Dusting Vulnerability
Description

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

INFO

Published Date :

Oct. 4, 2021, 5:15 p.m.

Last Modified :

Nov. 21, 2024, 6:26 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.5

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2021-41591 has a 2 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-41591 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Acinq eclair

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

master

C++ HTML M4

Updated: 2 years, 8 months ago
1 stars 0 fork 0 watcher
Born at : Sept. 18, 2021, 3:33 a.m. This repo has been linked 46 different CVEs too.

List of Lightning Network technical issues, bugs, flaws, and exploits.

lightning-network

Updated: 3 months, 2 weeks ago
97 stars 4 fork 4 watcher
Born at : March 29, 2021, 1:26 p.m. This repo has been linked 6 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-41591 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-41591 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://bitcoinmagazine.com/technical/good-griefing-a-lingering-vulnerability-on-lightning-network-that-still-needs-fixing
    Added Reference https://github.com/ACINQ/eclair/pull/1985
    Added Reference https://lists.linuxfoundation.org/pipermail/lightning-dev/2020-May/002714.html
    Added Reference https://lists.linuxfoundation.org/pipermail/lightning-dev/2021-October/003257.html
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CWE Remap by [email protected]

    Jul. 12, 2022

    Action Type Old Value New Value
    Changed CWE CWE-863 CWE-770
  • Initial Analysis by [email protected]

    Oct. 20, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
    Changed Reference Type https://bitcoinmagazine.com/technical/good-griefing-a-lingering-vulnerability-on-lightning-network-that-still-needs-fixing No Types Assigned https://bitcoinmagazine.com/technical/good-griefing-a-lingering-vulnerability-on-lightning-network-that-still-needs-fixing Press/Media Coverage
    Changed Reference Type https://github.com/ACINQ/eclair/pull/1985 No Types Assigned https://github.com/ACINQ/eclair/pull/1985 Patch, Third Party Advisory
    Changed Reference Type https://lists.linuxfoundation.org/pipermail/lightning-dev/2020-May/002714.html No Types Assigned https://lists.linuxfoundation.org/pipermail/lightning-dev/2020-May/002714.html Mailing List, Vendor Advisory
    Changed Reference Type https://lists.linuxfoundation.org/pipermail/lightning-dev/2021-October/003257.html No Types Assigned https://lists.linuxfoundation.org/pipermail/lightning-dev/2021-October/003257.html Exploit, Vendor Advisory
    Added CWE NIST CWE-863
    Added CPE Configuration OR *cpe:2.3:a:acinq:eclair:*:*:*:*:*:*:*:* versions up to (excluding) 0.6.3
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-41591 is associated with the following CWEs:

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.59 }} -0.64%

score

0.66674

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
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Scope
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Latest DB Update: May. 15, 2025 7:10