What is the CVSS score of CVE-2021-41593?

CVE-2021-41593 has a CVSS 3.1 base score of 8.6 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L. EPSS exploitation probability: 1.9%.

Is there a public PoC exploit available for CVE-2021-41593?

Yes, a public proof-of-concept exploit is available for CVE-2021-41593. Prioritise patching immediately. EPSS: 1.9%.

Lightning Network Daemon CVE-2021-41593

HIGH

Allocation of Resources Without Limits or Throttling (CWE-770)

2021-10-04 cve@mitre.org

Denial Of Service Lightning Network Daemon

8.6

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.6 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

High

Availability

Low

Lifecycle Timeline

CVE Published

Oct 04, 2021 - 17:15 nvd

HIGH 8.6

DescriptionNVD

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

AnalysisAI

Lightning Labs lnd before 0.13.3-beta allows loss of funds because of dust HTLC exposure. Rated high severity (CVSS 8.6), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Allocation of Resources Without Limits (CWE-770), which allows attackers to exhaust system resources through uncontrolled allocation. Lightning Labs lnd before 0.13.3-beta allows loss of funds because of dust HTLC exposure. Affected products include: Lightning Network Daemon Project Lightning Network Daemon. Version information: before 0.13.3.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Set resource limits, implement rate limiting, validate input sizes.