CVE-2023-51443

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• 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

1.48% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 73.7% 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: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

2023-12-27 16:30Z2 YR AGO

Last updated

2025-11-04 18:21Z11 MO AGO

Reserved

2023-12-19

Assigning CNA

GitHub_M

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:N/I:N/A:H

Weaknesses

• CWE-703Improper Check or Handling of Exceptional ConditionsPillar

Data version

5.2

Document digest

adaa547e0448d3cc2a6a5d732413af8b39c12aaa6d30b8d22e49dd80d7095fee

• github.comhttps://github.com/signalwire/freeswitch/security/advisories/GHSA-39gv-hq72-j6m6x_refsource_CONFIRM
• github.comhttps://github.com/signalwire/freeswitch/commit/86cbda90b84ba186e508fbc7bfae469270a97d11x_refsource_MISC
• packetstormsecurity.comhttp://packetstormsecurity.com/files/176393/FreeSWITCH-Denial-Of-Service.html
• packetstormsecurity.comhttp://packetstormsecurity.com/files/176311/FreeSWITCH-1.10.10-Denial-Of-Service.html
• seclists.orghttp://seclists.org/fulldisclosure/2023/Dec/29