CVE-2019-18976

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

An issue was discovered in res_pjsip_t38.c in Sangoma Asterisk through 13.x and Certified Asterisk through 13.21-x. If it receives a re-invite initiating T.38 faxing and has a port of 0 and no c line in the SDP, a NULL pointer dereference and crash will occur. This is different from CVE-2019-18940.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-476

Affected software

No affected versions have been published.

Timeline

Published
Nov 22, 2019
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2019-18976: High severity, CVSS 7.5 | Vulnix