CVE-2022-44797: btcd before 0.23.2, as used in Lightning Labs lnd before 0.15.2-beta and other Bitcoin-related products, misha

Q: How do I fix CVE-2022-44797?

btcd: upgrade to 0.23.2. Exact commands for each OS are on this page.

Q: Is CVE-2022-44797 being exploited?

CVE-2022-44797 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-44797 affect?

CVE-2022-44797 affects btcd. Severity is critical (CVSS 9.8). btcd before 0.23.2, as used in Lightning Labs lnd before 0.15.2-beta and other Bitcoin-related products, mishandles witness size checking.

Q: How urgent is CVE-2022-44797?

Priority 62/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2022-44797 is a critical-severity flaw (CVSS 9.8) affecting btcd. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

btcd before 0.23.2, as used in Lightning Labs lnd before 0.15.2-beta and other Bitcoin-related products, mishandles witness size checking.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Published	2022-11-07
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: btcd project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-11-07 04:15 UTCPublished CVE record published
2026-06-17 05:08 UTCUpdated Record last modified

btcd project btcd UPGRADE

Affected: < 0.23.2

Fixed in: 0.23.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy btcd || rpm -q btcd || btcd --version

2. UPGRADE to 0.23.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade btcd

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade btcd

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-44797?

btcd: upgrade to 0.23.2. Exact commands for each OS are on this page.

Is CVE-2022-44797 being exploited?

CVE-2022-44797 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-44797 affect?

CVE-2022-44797 affects btcd. Severity is critical (CVSS 9.8). btcd before 0.23.2, as used in Lightning Labs lnd before 0.15.2-beta and other Bitcoin-related products, mishandles witness size checking.

How urgent is CVE-2022-44797?

Priority 62/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-38365 HIGH 7.4 UPGRADE btcd is an alternative full node bitcoin implementation written in Go (golang)
CVE-2024-34478 HIGH 7.5 UPGRADE btcd before 0.24.0 does not correctly implement the consensus rules outlined in BIP 68 and BIP 112, making it
CVE-2022-39389 HIGH 8.2 UPGRADE UPGRADE Lightning Network Daemon (lnd) is an implementation of a lightning bitcoin overlay network node
CVE-2018-17145 HIGH 7.5 UPGRADE UPGRADE Bitcoin Core 0.16.x before 0.16.2 and Bitcoin Knots 0.16.x before 0.16.2 allow remote denial of service via a

References

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