CVE catalog

CVE-2026-39863

Severity: High · CVSS 7.5
Published: Apr 8, 2026, 8:16:26 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.46% · Oct 25, 2026

Kamailio is an open source implementation of a SIP Signaling Server. Prior to 6.1.1, 6.0.6, and 5.8.8, an out-of-bounds access in the core of Kamailio (formerly OpenSER and SER) allows remote attackers to cause a denial of service (process crash) via a specially crafted data packet sent over TCP. The issue impacts Kamailio instances having TCP or TLS listeners. This vulnerability is fixed in 5.1.1, 6.0.6, and 5.8.8.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	kamailio	sid	`6.1.5-1`	fixed
Debian	kamailio	forky	`6.1.5-1`	fixed
Debian	kamailio	trixie	`6.0.1-1+deb13u1`	vulnerable
Debian	kamailio	trixie-security	`6.0.1-1+deb13u2`	fixed
Debian	kamailio	bookworm	`5.6.3-2`	vulnerable
Cpe	kamailio	Not reported	Not reported	vulnerable
Cpe	kamailio	Not reported	`5.8.8`	fixed
Cpe	kamailio	Not reported	`6.0.6`	fixed
Cpe	kamailio	Not reported	Not reported	unknown
Alpine	kamailio	3.14	`5.4.5-r2`	fixed
Alpine	kamailio	3.20	`5.8.8-r0`	fixed
Alpine	kamailio	3.21	`5.8.8-r0`	fixed
Alpine	kamailio	3.22	`6.0.6-r0`	fixed
Alpine	kamailio	3.23	`6.0.6-r0`	fixed
Alpine	kamailio	3.24	`6.0.6-r0`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	kamailio	source	sid	`6.1.1-2`	not yet assigned	Not reported	Not reported
Debian	kamailio	source	forky	`6.1.1-2`	not yet assigned	Not reported	Not reported
Debian	kamailio	source	trixie	`6.0.1-1+deb13u2`	not yet assigned	Not reported	Not reported
Debian	kamailio	source	bookworm	`(unfixed)`	not yet assigned	Not reported	Not reported
Cpe	kamailio	cpe	Not reported	`5.8.8`	Not reported	Not reported	Not reported
Cpe	kamailio	cpe	Not reported	`6.0.6`	Not reported	Not reported	Not reported
Alpine	kamailio	apk	3.14	`5.4.5-r2`	Not reported	ALPINE-CVE-2026-39863	Not reported
Alpine	kamailio	apk	3.20	`5.8.8-r0`	Not reported	ALPINE-CVE-2026-39863	Not reported
Alpine	kamailio	apk	3.21	`5.8.8-r0`	Not reported	ALPINE-CVE-2026-39863	Not reported
Alpine	kamailio	apk	3.22	`6.0.6-r0`	Not reported	ALPINE-CVE-2026-39863	Not reported
Alpine	kamailio	apk	3.23	`6.0.6-r0`	Not reported	ALPINE-CVE-2026-39863	Not reported
Alpine	kamailio	apk	3.24	`6.0.6-r0`	Not reported	ALPINE-CVE-2026-39863	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[kamailio]Affected
Details (2)
- 5.6.3-2 · amd64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
- 5.6.3-2 · arm64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
[kamailio-autheph-modules]Affected
Source package: [kamailio]
Details (2)
- 5.6.3-2 · amd64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
- 5.6.3-2 · arm64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
[kamailio-berkeley-bin]Affected
Source package: [kamailio]
Details (2)
- 5.6.3-2 · amd64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
- 5.6.3-2 · arm64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
[kamailio-berkeley-modules]Affected
Source package: [kamailio]
Details (2)
- 5.6.3-2 · amd64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
- 5.6.3-2 · arm64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
[kamailio-cnxcc-modules]Affected
Source package: [kamailio]
Details (2)
- 5.6.3-2 · amd64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
- 5.6.3-2 · arm64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
[kamailio-cpl-modules]Affected
Source package: [kamailio]
Details (2)
- 5.6.3-2 · amd64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
- 5.6.3-2 · arm64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
[kamailio-erlang-modules]Affected
Source package: [kamailio]
Details (2)
- 5.6.3-2 · amd64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
- 5.6.3-2 · arm64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
[kamailio-extra-modules]Affected
Source package: [kamailio]
Details (2)
- 5.6.3-2 · amd64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
- 5.6.3-2 · arm64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
[kamailio-geoip2-modules]Affected
Source package: [kamailio]
Details (2)
- 5.6.3-2 · amd64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
- 5.6.3-2 · arm64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
[kamailio-geoip-modules]Affected
Source package: [kamailio]
Details (2)
- 5.6.3-2 · amd64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
- 5.6.3-2 · arm64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
[kamailio-ims-modules]Affected
Source package: [kamailio]
Details (2)
- 5.6.3-2 · amd64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
- 5.6.3-2 · arm64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
[kamailio-json-modules]Affected
Source package: [kamailio]
Details (2)
- 5.6.3-2 · amd64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
- 5.6.3-2 · arm64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
[kamailio-kazoo-modules]Affected
Source package: [kamailio]
Details (2)
- 5.6.3-2 · amd64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
- 5.6.3-2 · arm64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
[kamailio-ldap-modules]Affected
Source package: [kamailio]
Details (2)
- 5.6.3-2 · amd64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
- 5.6.3-2 · arm64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
[kamailio-lua-modules]Affected
Source package: [kamailio]
Details (2)
- 5.6.3-2 · amd64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
- 5.6.3-2 · arm64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
[kamailio-lwsc-modules]Affected
Source package: [kamailio]
Details (2)
- 5.6.3-2 · amd64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
- 5.6.3-2 · arm64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
[kamailio-memcached-modules]Affected
Source package: [kamailio]
Details (2)
- 5.6.3-2 · amd64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
- 5.6.3-2 · arm64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
[kamailio-mongodb-modules]Affected
Source package: [kamailio]
Details (2)
- 5.6.3-2 · amd64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
- 5.6.3-2 · arm64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
[kamailio-mono-modules]Affected
Source package: [kamailio]
Details (1)
- 5.6.3-2 · amd64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
[kamailio-mqtt-modules]Affected
Source package: [kamailio]
Details (2)
- 5.6.3-2 · amd64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12
- 5.6.3-2 · arm64 · bookworm
  Affected
  nvd · kamailio · debian · bookworm; nvd · kamailio · debian · 12

Next results

Observed: Oct 27, 2026, 7:59:37 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]