How severe is CVE-2024-52921?

CVE-2024-52921 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2024-52921 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-52921?

CVE-2024-52921 affects Bitcoin Bitcoin Core. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-52921?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-52921 have an EU (EUVD) identifier?

Yes. CVE-2024-52921 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-45971.

When was CVE-2024-52921 published?

CVE-2024-52921 was published on 2024-11-18 and last updated on 2026-06-17.

CVE-2024-52921

CVE-2024-52921 is a medium-severity vulnerability in Bitcoin Bitcoin Core with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-45971
Weakness: CWE-862
Affected product: Bitcoin Bitcoin Core
Published: 2024-11-18
Last modified: 2026-06-17

Description

In Bitcoin Core before 25.0, a peer can affect the download state of other peers by sending a mutated block.

Frequently asked questions

What is CVE-2024-52921?: In Bitcoin Core before 25.0, a peer can affect the download state of other peers by sending a mutated block.
How severe is CVE-2024-52921?: CVE-2024-52921 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2024-52921 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-52921?: CVE-2024-52921 affects Bitcoin Bitcoin Core. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-52921?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-52921 have an EU (EUVD) identifier?: Yes. CVE-2024-52921 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-45971.
When was CVE-2024-52921 published?: CVE-2024-52921 was published on 2024-11-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:bitcoin:bitcoin_core:*:*:*:*:*:*:*:*

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