CVE-2024-52922Network attack vector

Block propagation delay via stalling announcing peers

Published Nov 18, 2024 · Updated Nov 18, 2024

Improper peer handling in Bitcoin Core before 25.1 allows remote attackers to delay block downloads via stalled block announcements. The block-download logic waits up to 10 minutes for an announcing peer that withholds the full block or missing transactions before trying another peer. Multiple attacker-controlled connections can repeat the delay, slowing network convergence and disrupting node liveness and mining payout fairness.

CVSS severity6.5
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper peer handling in Bitcoin Core before 25.1 allows remote attackers to delay block downloads via stalled block announcements. The block-download logic waits up to 10 minutes for an announcing peer that withholds the full block or missing transactions before trying another peer. Multiple attacker-controlled connections can repeat the delay, slowing network convergence and disrupting node liveness and mining payout fairness.

The record

CVE
CVE-2024-52922
Published
Nov 18, 2024
Updated
Nov 18, 2024
Vendor
Bitcoin
Product
Bitcoin Core
Classifications
T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 18, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 18, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=0 <25.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Bitcoin · Bitcoin Coreversion=0 <25.1

Published CVSS scores

6.5CISA ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

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.

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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 exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

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Your stack

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