CVE-2023-40018

Name: CVE-2023-40018
Creator: NVD / NIST
Published: 2023-09-15T20:15:09.447+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.75%

Last modified Jun 17, 2026

CVE-2023-40018 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.10.10, FreeSWITCH allows remote users to trigger out of bounds write by offering an ICE candidate with unknown component ID. EPSS estimates a 0.75% chance of exploitation in the next 30 days.

Description

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.10.10, FreeSWITCH allows remote users to trigger out of bounds write by offering an ICE candidate with unknown component ID. When an SDP is offered with any ICE candidates with an unknown component ID, FreeSWITCH will make an out of bounds write to its arrays. By abusing this vulnerability, an attacker is able to corrupt FreeSWITCH memory leading to an undefined behavior of the system or a crash of it. Version 1.10.10 contains a patch for this issue.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.75%

50.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Freeswitch	Freeswitch	< 1.10.10

References

https://github.com/signalwire/freeswitch/releases/tag/v1.10.10Release Notes
https://github.com/signalwire/freeswitch/security/advisories/GHSA-7mwp-86fv-hcg3Vendor Advisory
https://github.com/signalwire/freeswitch/releases/tag/v1.10.10Release Notes
https://github.com/signalwire/freeswitch/security/advisories/GHSA-7mwp-86fv-hcg3Vendor Advisory

Timeline

Published: Sep 15, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-40018?

How severe is CVE-2023-40018?

CVE-2023-40018 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.75% probability of exploitation in the next 30 days.

How do I fix CVE-2023-40018?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-40018?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST