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Vulnerability record · CVE-2022-26498 · published 15 April 2022

CVE-2022-26498: Digium asterisk uncontrolled resource consumption vulnerability

Digium · Asterisk

An issue was discovered in Asterisk through 19.x. When using STIR/SHAKEN, it is possible to download files that are not certificates. These files could be much larger than what one would expect to download, leading to Resource Exhaustion. This is fixed in 16.25.2, 18.11.2, and 19.3.2.

7.5 CVSS 3.1 High EPSS 17% · top 3.1% CWE-400 · Uncontrolled resource consumption
7.5CVSS 3.1 base score, v2 5.0
17%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

Description

An issue was discovered in Asterisk through 19.x. When using STIR/SHAKEN, it is possible to download files that are not certificates. These files could be much larger than what one would expect to download, leading to Resource Exhaustion. This is fixed in 16.25.2, 18.11.2, and 19.3.2.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/166744/Asterisk-Project-Security-Advisory-AST-2022-001.html PatchThird Party AdvisoryVDB Entry
http://packetstormsecurity.com/files/172139/Shannon-Baseband-chatroom-SDP-Attribute-Memory-Corruption.html
https://downloads.asterisk.org/pub/security/ Vendor Advisory
https://downloads.asterisk.org/pub/security/AST-2022-001.html PatchVendor Advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html Mailing ListThird Party Advisory
https://www.debian.org/security/2022/dsa-5285 Third Party Advisory
http://packetstormsecurity.com/files/166744/Asterisk-Project-Security-Advisory-AST-2022-001.html PatchThird Party AdvisoryVDB Entry
http://packetstormsecurity.com/files/172139/Shannon-Baseband-chatroom-SDP-Attribute-Memory-Corruption.html
https://downloads.asterisk.org/pub/security/ Vendor Advisory
https://downloads.asterisk.org/pub/security/AST-2022-001.html PatchVendor Advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html Mailing ListThird Party Advisory
https://www.debian.org/security/2022/dsa-5285 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2022-26498), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.