TI-2024-23274 Aliases CVE-2024-35202 GHSA-53v9-6jr7-7fxh

Bitcoin Core before 25.0 allows remote attackers to cause a denial of service (blocktxn…

MEDIUM 41CWE-770Published 2024-10-10 · Updated 2024-10-10

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-770.

Summary

Bitcoin Core before 25.0 allows remote attackers to cause a denial of service (blocktxn message-handling assertion and node exit) by including transactions in a blocktxn message that are not committed to in a block's merkle root. FillBlock can be called twice for one PartiallyDownloadedBlock instance.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00894 59th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:bitcoin:bitcoin_core::::::::	before 25.0	Vulnerable	Bitcoin

cpe:2.3:a:bitcoin:bitcoin_core:*:*:*:*:*:*:*:* Versions before 25.0 Vulnerable ·Bitcoin

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2024-35202
2026-10-03 Alias added: GHSA-53v9-6jr7-7fxh

References

Patch 1

https://bitcoincore.org/en/2024/10/08/disclose-blocktxn-crash/

Advisory 1

https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures

Other 3

TI-2023-18826 Memory management and protection issues in Bitcoin Core v22 allows attackers to modify… CVSS 3.1HIGH 7.5
TI-2018-12251 Bitcoin Core 0.14.x before 0.14.3, 0.15.x before 0.15.2, and 0.16.x before 0.16.3 and… CVSS 3.1HIGH 7.5
TI-2024-35417 Bitcoin Core before 0.20.0 allows remote attackers to cause a denial of service (infinite… CVSS 3.1HIGH 7.5
TI-2024-35412 Bitcoin Core before 0.20.0 allows remote attackers to cause a denial of service (memory… CVSS 3.1HIGH 7.5
TI-2019-15274 Bitcoin Core before 24.0.1 allows remote attackers to cause a denial of service (daemon… CVSS 3.1HIGH 7.5
TI-2018-12252 Bitcoin Core 0.16.x before 0.16.2 and Bitcoin Knots 0.16.x before 0.16.2 allow remote… CVSS 3.1HIGH 7.5

See all 53 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences