Answer in brief
CVE-2026-57187 records a High severity (CVSS 7.1) vulnerability in Asterisk: Heap-use-after-free in Asterisk PJSIP TCP/SDP handling when TCP connection closes during SDP processing. The current sources do not mark it as known exploited. The current feed maps asterisk/asterisk (generic), asterisk/certified-asterisk (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps asterisk/asterisk (generic), asterisk/certified-asterisk (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| asterisk/asteriskgeneric | <20.20.1 || >=21.0.0-pre1 <21.12.3 || >=22.0.0-pre1 <22.10.1 || >=23.0.0-pre1 <23.4.1 | 20.20.1, 21.12.3, 22.10.1, 23.4.1 |
| asterisk/certified-asteriskgeneric | <20.7-cert11 || >=22.8-cert1-pre1 <22.8-cert3 | 20.7-cert11, 22.8-cert3 |
Published upstream
Oct 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 26, 2026
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 heap-use-after-free in `PJSIP TCP/SDP` handling by sending a `SIP INVITE` over a connection-oriented transport and disconnecting before Asterisk responds with the `200 OK`. So far, the crash has only been reproduced when Asterisk is built with `Address Sanitizer`, which detects the issue. `Address Sanitizer` is a development tool with significant performance overhead and, according to the maintainer, is not used in production systems. 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.
Quoted source text, attributed separately from HOL analysis.