Bug 2562102 (CVE-2026-57185)

Summary: CVE-2026-57185 asterisk: Asterisk: Denial of Service via crafted SIP NOTIFY request
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Asterisk. An authenticated remote attacker can trigger a buffer over-read in the PJSIP Message Waiting Indication (MWI) body parser by sending a specially crafted Session Initiation Protocol (SIP) NOTIFY request. Successful exploitation causes Asterisk to crash, resulting in a Denial of Service (DoS).
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2564812, 2564813, 2564815, 2564816    
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Description OSIDB Bzimport 2026-10-27 17:42:20 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 crash Asterisk through a buffer over-read in the `PJSIP MWI body parser` by sending a carefully crafted `SIP NOTIFY` request. The attacker must pass SIP authentication using either a username/password or `source IP address matching`. 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.