CVE catalog

CVE-2026-39864

Severity: Medium · CVSS 4.4
Published: Apr 8, 2026, 8:16:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.30% · Oct 25, 2026

Kamailio is an open source implementation of a SIP Signaling Server. Prior to 6.0.5 and 5.8.7, an out-of-bounds read in the auth module of Kamailio (formerly OpenSER and SER) allows remote attackers to cause a denial of service (process crash) via a specially crafted SIP packet if a successful user authentication without a database backend is followed by additional user identity checks. This vulnerability is fixed in 6.0.5 and 5.8.7.

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	`5.8.7`	fixed
Cpe	kamailio	Not reported	`6.0.5`	fixed
Ubuntu	kamailio	pro	`5.2.3-1build3`	vulnerable
Ubuntu	kamailio	pro	`5.2.3-1build4`	vulnerable
Ubuntu	kamailio	pro	`5.3.0-2`	vulnerable
Ubuntu	kamailio	pro	`5.3.1-1`	vulnerable
Ubuntu	kamailio	pro	`5.3.2-1build1`	vulnerable
Ubuntu	kamailio	pro	`5.3.2-1build2`	vulnerable
Ubuntu	kamailio	pro	`5.3.2-1build3`	vulnerable
Ubuntu	kamailio	pro	`5.3.2-1ubuntu0.1~esm1`	vulnerable
Ubuntu	kamailio	pro	`5.3.2-1ubuntu0.1~esm2`	vulnerable
Ubuntu	kamailio	22.04	`5.4.4-1build1`	vulnerable
Ubuntu	kamailio	22.04	`5.4.4-1ubuntu1`	vulnerable
Ubuntu	kamailio	22.04	`5.4.4-1ubuntu2`	vulnerable
Ubuntu	kamailio	22.04	`5.5.4-1`	vulnerable
Ubuntu	kamailio	24.04	`5.7.0-1build1`	vulnerable
Ubuntu	kamailio	24.04	`5.7.2-1build1`	vulnerable
Ubuntu	kamailio	24.04	`5.7.3-1`	vulnerable
Ubuntu	kamailio	24.04	`5.7.4-1`	vulnerable
Ubuntu	kamailio	24.04	`5.7.4-1build1`	vulnerable
Ubuntu	kamailio	24.04	`5.7.4-1build5`	vulnerable
Ubuntu	kamailio	24.04	`5.7.4-1build7`	vulnerable
Ubuntu	kamailio	25.10	`5.8.4-1build1`	vulnerable
Ubuntu	kamailio	25.10	`6.0.1-1build2`	vulnerable
Ubuntu	kamailio	25.10	`6.0.2-2`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	kamailio	source	sid	`6.0.5-1`	not yet assigned	Not reported	Not reported
Debian	kamailio	source	forky	`6.0.5-1`	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	`5.8.7`	Not reported	Not reported	Not reported
Cpe	kamailio	cpe	Not reported	`6.0.5`	Not reported	Not reported	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]