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CVE-2026-39864

Medium priority
Needs evaluation

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...

1 affected package

kamailio

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
kamailio Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-39863

Medium priority
Needs evaluation

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...

1 affected package

kamailio

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
kamailio Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2025-12207

Medium priority
Needs evaluation

A vulnerability has been found in Kamailio 5.5. This affects the function yyerror_at of the file src/core/cfg.y of the component Grammar Rule Handler. Such manipulation leads to null pointer dereference. The attack needs to be...

1 affected package

kamailio

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
kamailio Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2025-12206

Medium priority
Needs evaluation

A flaw has been found in Kamailio 5.5. The impacted element is the function rve_is_constant of the file src/core/rvalue.c. This manipulation causes null pointer dereference. The attack needs to be launched locally. The exploit has...

1 affected package

kamailio

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
kamailio Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2025-12205

Medium priority
Needs evaluation

A vulnerability was detected in Kamailio 5.5. The affected element is the function sr_push_yy_state of the file src/core/cfg.lex of the component Configuration File Handler. The manipulation results in use after free. The attack...

1 affected package

kamailio

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
kamailio Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2025-12204

Medium priority
Needs evaluation

A security vulnerability has been detected in Kamailio 5.5. Impacted is the function rve_destroy of the file src/core/rvalue.c of the component Configuration File Handler. The manipulation leads to heap-based buffer overflow. The...

1 affected package

kamailio

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
kamailio Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2020-27507

Medium priority

Some fixes available 3 of 5

The Kamailio SIP before 5.5.0 server mishandles INVITE requests with duplicated fields and overlength tag, leading to a buffer overflow that crashes the server or possibly have unspecified other impact.

1 affected package

kamailio

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
kamailio Not affected Not affected Fixed Fixed
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CVE-2020-28361

Medium priority

Some fixes available 2 of 8

Kamailio before 5.4.0, as used in Sip Express Router (SER) in Sippy Softswitch 4.5 through 5.2 and other products, allows a bypass of a header-removal protection mechanism via whitespace characters. This occurs in the remove_hf...

1 affected package

kamailio

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
kamailio Not affected Not affected Fixed Fixed
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CVE-2018-16657

Medium priority

Some fixes available 2 of 3

In Kamailio before 5.0.7 and 5.1.x before 5.1.4, a crafted SIP message with an invalid Via header causes a segmentation fault and crashes Kamailio. The reason is missing input validation in the crcitt_string_array core...

1 affected package

kamailio

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
kamailio Not affected Not affected Fixed
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CVE-2018-14767

Low priority

Some fixes available 2 of 3

In Kamailio before 5.0.7 and 5.1.x before 5.1.4, a crafted SIP message with a double "To" header and an empty "To" tag causes a segmentation fault and crash. The reason is missing input validation in...

1 affected package

kamailio

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
kamailio Not affected Not affected Not affected Fixed
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