CVE-2023-20259

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

0.80% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 56.4% 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:N/I:N/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

2023-10-04 16:13Z3 YR AGO

Last updated

2024-08-02 09:05Z2 YR AGO

Reserved

2022-10-27

Assigning CNA

cisco

Record state

PUBLISHED

Severity

High (CVSS 8.6)

CNA CVSS vector

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

Weaknesses

• CWE-400Uncontrolled Resource ConsumptionClass

Data version

5.1

Document digest

28599767c8ac149b23346da1b62098b700aed76bab763c239a383e3449b900f5

• sec.cloudapps.cisco.comcisco-sa-cucm-apidos-PGsDcdNFhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-apidos-PGsDcdNF