CVE-2024-35202

moderate-risk
Published 2024-10-10

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.

Do I need to act?

~
1.4% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Bitcoin

References (5)

Patch https://bitcoincore.org/en/2024/10/08/disclose-blocktxn-crash/
Third Party Advisory https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures
Release Notes https://github.com/bitcoin/bitcoin/blob/master/doc/release-notes/release-notes-2...
Issue Tracking https://github.com/bitcoin/bitcoin/pull/26898
Release Notes https://github.com/bitcoin/bitcoin/releases/tag/v25.0
35
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 4/34 · Minimal
Exposure 5/34 · Minimal