HighFix available
asterisk — security advisory
Incorrect access controls in res_srtp.c in Sangoma Asterisk 13.38.1, 16.16.0, 17.9.1, and 18.2.0 and Certified Asterisk 16.8-cert5 allow a remote unauthenticated attacker to prematurely terminate secure calls by replaying SRTP packets.
- Products
- asterisk
- Affected versions
- Not specified
- Fixed versions
- 16.16.1-r0, 18.2.1-r0
- CVEs
- CVE-2021-26712
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 22:03 UTC · Revision 1
Source evidence
Incorrect access controls in res_srtp.c in Sangoma Asterisk 13.38.1, 16.16.0, 17.9.1, and 18.2.0 and Certified Asterisk 16.8-cert5 allow a remote unauthenticated attacker to prematurely terminate secure calls by replaying SRTP packets.
osv:ALPINE-CVE-2021-26712
asterisk
Fixed versions: 16.16.1-r0
asterisk
Fixed versions: 18.2.1-r0
asterisk
Fixed versions: 18.2.1-r0
asterisk
Fixed versions: 18.2.1-r0
asterisk
Fixed versions: 18.2.1-r0
asterisk
Fixed versions: 18.2.1-r0
asterisk
Fixed versions: 18.2.1-r0
asterisk
Fixed versions: 18.2.1-r0
asterisk
Fixed versions: 18.2.1-r0
asterisk
Fixed versions: 18.2.1-r0
asterisk
Fixed versions: 18.2.1-r0
asterisk
Fixed versions: 18.2.1-r0
asterisk
Fixed versions: 18.2.1-r0
Complete source record
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"url": "https://osv.dev/vulnerability/ALPINE-CVE-2021-26712",
"method": "structured",
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"title": "ALPINE-CVE-2021-26712",
"summary": "Incorrect access controls in res_srtp.c in Sangoma Asterisk 13.38.1, 16.16.0, 17.9.1, and 18.2.0 and Certified Asterisk 16.8-cert5 allow a remote unauthenticated attacker to prematurely terminate secure calls by replaying SRTP packets.",
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"aliases": [
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],
"modified": "2026-10-23T17:17:56.163171550Z",
"provider": "osv",
"upstream": [
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"references": [
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},
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"source_id": "core-osv",
"document_id": 415353,
"published_at": "2021-02-18T21:15:11.447+00:00"
}