CVE-2021-40530

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

1.15% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 66.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

2021-09-06 18:44Z5 YR AGO

Last updated

2024-08-04 02:44Z2 YR AGO

Reserved

2021-09-06

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-327Use of a Broken or Risky Cryptographic AlgorithmClass

Data version

5.1

Document digest

e8d241d2f732833ad66e1181023dbe48038bebff58af51b339b4eb7c926ba8cf

• eprint.iacr.orghttps://eprint.iacr.org/2021/923x_refsource_MISC
• ibm.github.iohttps://ibm.github.io/system-security-research-updates/2021/07/20/insecurity-elgamal-pt1x_refsource_MISC
• ibm.github.iohttps://ibm.github.io/system-security-research-updates/2021/09/06/insecurity-elgamal-pt2x_refsource_MISC
• lists.fedoraproject.orgFEDORA-2021-8b14da0538https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HGVBZ2TTRKCTYAZTRHTF6OBD4W37F5MT/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-a381a721a9https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/57OJA2K5AHX5HAU2QBDRWLGIIUX7GASC/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-6788250ea4https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VJYOZGWI7TD27SEXILSM6VUTPPEICDL7/vendor-advisoryx_refsource_FEDORA