CVE-2022-39389Public exploitNetwork attack vector

Service degradation via excessive witness items

Published Nov 17, 2022 · Updated Apr 22, 2025

Improper input validation in Lightning Labs LND before 0.15.4-beta allows remote attackers to stop chain processing via a crafted Bitcoin transaction. The embedded btcd wire.MsgTx.BtcDecode parser caps witness items at 500,000, rejecting a consensus-valid P2TR spend with 500,001 empty pushes. Once that transaction enters an observed block, chain synchronization stops while routing continues, exposing pending HTLCs and breach remedies to expiry-related fund loss.

CVSS severity8.1
High
EPSS probability1.03%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper input validation in Lightning Labs LND before 0.15.4-beta allows remote attackers to stop chain processing via a crafted Bitcoin transaction. The embedded btcd wire.MsgTx.BtcDecode parser caps witness items at 500,000, rejecting a consensus-valid P2TR spend with 500,001 empty pushes. Once that transaction enters an observed block, chain synchronization stops while routing continues, exposing pending HTLCs and breach remedies to expiry-related fund loss.

The record

CVE
CVE-2022-39389
Published
Nov 17, 2022
Updated
Apr 22, 2025
Vendor
Lightning Labs
Product
LND
Classifications
CWE-20, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 17, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< v0.15.4-beta

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Lightning Labs · LNDversion=< v0.15.4-beta

Published CVSS scores

8.1Lightning LabsCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo