CVE-2021-41591

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

1.70% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 75.2% of scored records. A rank, not a probability.

NVD base score

9.4 (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:L/I:H/A:H

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

2021-10-04 16:47Z4 YR AGO

Last updated

2024-08-04 03:15Z2 YR AGO

Reserved

2021-09-24

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-770Allocation of Resources Without Limits or ThrottlingBase

Data version

5.1

Document digest

efa0893f8a282b4a42c2783d862dfe10d1534adb1307f8b964a184d6b1577b7a

• lists.linuxfoundation.orghttps://lists.linuxfoundation.org/pipermail/lightning-dev/2020-May/002714.htmlx_refsource_MISC
• bitcoinmagazine.comhttps://bitcoinmagazine.com/technical/good-griefing-a-lingering-vulnerability-on-lightning-network-that-still-needs-fixingx_refsource_MISC
• lists.linuxfoundation.orghttps://lists.linuxfoundation.org/pipermail/lightning-dev/2021-October/003257.htmlx_refsource_MISC
• github.comhttps://github.com/ACINQ/eclair/pull/1985x_refsource_MISC