CVE-2021-37491

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.86% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 58.1% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

NVD analysis status

Modified. NVD last modified this record on 2026-07-09.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2023-02-07 00:00Z3 YR AGO

Last updated

2026-07-09 00:14Z3 MO AGO

Reserved

2021-07-26

Assigning CNA

mitre

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weaknesses

No CWE assigned

Data version

5.2

Document digest

51f8fe50eeeb633edf78dcf9150f362cbcdb378c861c9df78cb920bc39610392

• github.comhttps://github.com/bitcoin/bitcoin/commit/2fb9c1e6681370478e24a19172ed6d78d95d50d3
• github.comhttps://github.com/dogecoin/dogecoin/blob/master/src/wallet/wallet.cpp#L2628-L2640
• github.comhttps://github.com/VPRLab/BlkVulnReport/blob/main/NDSS23_BlockScope.pdf
• github.comhttps://github.com/dogecoin/dogecoin/issues/2279