High severity · published Mar 20, 2026
CVE-2025-46597
Bitcoin Core 0.13.0 through 29.x has an integer overflow
7.5
CVSS
0.3%
EPSS
No
On KEV
Description
Bitcoin Core 0.13.0 through 29.x has an integer overflow.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BC
Bitcoin Core · Bitcoin
0.13.0 before 0.30.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-46597
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-46597
Vendor Advisory
https://bitcoincore.org/en/2025/10/24/disclose-cve-2025-46597/
Release Notes
https://github.com/bitcoin/bitcoin/releases
More from Bitcoin Core
9.8
CVE-2015-20111
miniupnp before 4c90b87, as used in Bitcoin Core before 0.12 and other products, lacks checks for snprintf return values, leading to a buffer overflow and significant data leak, a…
7.5
CVE-2025-54605
Bitcoin Core through 29.0 allows Uncontrolled Resource Consumption (issue 2 of 2)
7.5
CVE-2025-54604
Bitcoin Core through 29.0 allows Uncontrolled Resource Consumption (issue 1 of 2)
7.5
CVE-2024-52912
Bitcoin Core before 0.21.0 allows a network split that is resultant from an integer overflow (calculating the time offset for newly connecting peers) and an abs64 logic bug
7.5
CVE-2024-52920
Bitcoin Core before 0.20.0 allows remote attackers to cause a denial of service (infinite loop) via a malformed GETDATA message