CVE-2021-31876

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

1.61% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 74.3% of scored records. A rank, not a probability.

NVD base score

6.5 (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:N/I:L/A:L

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

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

2021-05-13 21:03Z5 YR AGO

Last updated

2024-08-03 23:10Z2 YR AGO

Reserved

2021-04-29

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-863Incorrect AuthorizationClass

Data version

5.1

Document digest

0e622d4fa320ca9f5afe93c1ea7d69292d804b1a8fc32705721c3cc1a4e6d0c3

• en.bitcoin.ithttps://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures#CVE-2021-31876x_refsource_MISC
• bitcoinops.orghttps://bitcoinops.org/en/topics/replace-by-fee/x_refsource_MISC
• github.comhttps://github.com/bitcoin/bitcoinx_refsource_MISC
• lists.linuxfoundation.orghttps://lists.linuxfoundation.org/pipermail/bitcoin-dev/2021-May/018893.htmlx_refsource_MISC
• bitcoinops.orghttps://bitcoinops.org/en/newsletters/2021/05/12/x_refsource_MISC