Bug 2562317 (CVE-2026-57188) - CVE-2026-57188 asterisk: Asterisk: Denial of Service via stack buffer overflow in res_xmpp
Summary: CVE-2026-57188 asterisk: Asterisk: Denial of Service via stack buffer overflo...
Keywords:
Status: NEW
Alias: CVE-2026-57188
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
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Depends On: 2564848 2564850 2564851 2564852
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-27 18:32 UTC by OSIDB Bzimport
Modified: 2026-11-02 09:57 UTC (History)
0 users

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Description OSIDB Bzimport 2026-10-27 18:32:49 UTC 
Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, an authenticated attacker may cause a stack buffer overflow in `res_xmpp` `XMPP namespace prefix` handling using carefully crafted packets. The `res_xmpp` module must be loaded, an XMPP connection must be configured in `xmpp.conf`, and the attacker must have an XMPP account on the same or a federated server. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.
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