CVE-2025-46597: Bitcoin Core 0.13.0 through 29.x has an integer overflow.

Routine

HIGH 7.5REMOTEUPGRADE

CVE-2025-46597 is a high-severity flaw (CVSS 7.5) affecting bitcoin core. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Bitcoin Core 0.13.0 through 29.x has an integer overflow.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-190
Published	2026-03-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: bitcoin

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

Am I affected?

Timeline

2026-03-20 16:16 UTCPublished CVE record published
2026-06-17 09:26 UTCUpdated Record last modified

bitcoin bitcoin core UPGRADE

Affected: >= 0.13.0 and < 0.30.0

Fixed in: 0.30.0

Safe to downgrade to: a release before 0.13.0

1. Check installed version

apt-cache policy bitcoin-core || rpm -q bitcoin-core || bitcoin-core --version

2. UPGRADE to 0.30.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade bitcoin-core

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade bitcoin-core

Note

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

3. If no update is available yet, DOWNGRADE to a release before 0.13.0 (Debian / Ubuntu)

apt-cache madison bitcoin-core sudo apt install bitcoin-core=<VERSION_BEFORE_0.13.0> sudo apt-mark hold bitcoin-core

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list bitcoin-core sudo dnf downgrade bitcoin-core-<VERSION_BEFORE_0.13.0> sudo dnf versionlock add bitcoin-core

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2025-46597?

bitcoin core: upgrade to 0.30.0. Exact commands for each OS are on this page.

Is CVE-2025-46597 being exploited?

CVE-2025-46597 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-2025-46597 affect?

CVE-2025-46597 affects bitcoin core. Severity is high (CVSS 7.5). Bitcoin Core 0.13.0 through 29.x has an integer overflow.

How urgent is CVE-2025-46597?

Priority 37/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-54605 HIGH 7.5 UPGRADE Bitcoin Core through 29.0 allows Uncontrolled Resource Consumption (issue 2 of 2).
CVE-2025-54604 HIGH 7.5 UPGRADE Bitcoin Core through 29.0 allows Uncontrolled Resource Consumption (issue 1 of 2).
CVE-2025-46598 MEDIUM 5.3 UPGRADE Bitcoin Core through 29.0 allows a denial of service via a crafted transaction.
CVE-2024-55563 MEDIUM 5.3 UPGRADE Bitcoin Core through 27.2 allows transaction-relay jamming via an off-chain protocol attack, a related issue t
CVE-2024-52922 MEDIUM 6.5 UPGRADE In Bitcoin Core before 25.1, an attacker can cause a node to not download the latest block, because there can

References

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