What is CVE-2019-25220?

CVE-2019-25220 is a high-severity vulnerability in Bitcoin Bitcoin_core, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2024-11-18.

How severe is CVE-2019-25220?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Bitcoin Bitcoin_core

CVE-2019-25220

Bitcoin Core before 24.0.1 allows remote attackers to cause a denial of service (daemon crash) via a flood of low-difficulty header chains (aka a "Chain Width Expansion" attack) because a node does not first verify that a presented chain h…

EPSS: 0.008 (51.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Bitcoin Bitcoin_core
N/a — versions n/a

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

cve@mitre.org (Third Party Advisory)
cve@mitre.org (Vendor Advisory)
cve@mitre.org (Mailing List)

Frequently asked questions

What is CVE-2019-25220?: CVE-2019-25220 is a high-severity vulnerability in Bitcoin Bitcoin_core, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2024-11-18.
How severe is CVE-2019-25220?: High severity. CVSS v3 base score is 7.5 out of 10.