CVE-2026-108822
Received Received - Intake

Buffer Overflow in Kamailio sipt Module

Publication date: 2026-10-12

Last updated on: 2026-10-12

Assigner: VulDB

Description
A vulnerability was detected in Kamailio up to 6.0.7/6.1.3. The affected element is the function isup_get_calling_party of the file src/modules/sipt/ss7_parser.c of the component sipt Module. The manipulation of the argument length results in buffer overflow. The attack may be performed from remote. Upgrading to version 6.0.8 and 6.1.4 is sufficient to fix this issue. The patch is identified as 3667bebf8d0bea07ed16218fd921d07db87aeb21. Upgrading the affected component is advised.

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Meta Information

Published
2026-10-12
Last Modified
2026-10-12
Generated
2026-10-12
AI Q&A
2026-10-12
EPSS Evaluated
N/A
NVD
CVE-2026-108822
EUVD
EUVD-2026-97321

Affected Vendors & Products

Showing 12 associated CPEs
Vendor Product Version / Range
n/a Kamailio 6.0.0
n/a Kamailio 6.0.1
n/a Kamailio 6.0.2
n/a Kamailio 6.0.3
n/a Kamailio 6.0.4
n/a Kamailio 6.0.5
n/a Kamailio 6.0.6
n/a Kamailio 6.0.7
n/a Kamailio 6.1.0
n/a Kamailio 6.1.1
n/a Kamailio 6.1.2
n/a Kamailio 6.1.3

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-119 The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
CWE-120 The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.

Attack-Flow Graph

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Executive Summary

This vulnerability is a buffer overflow in Kamailio's sipt module, specifically in the function isup_get_calling_party within src/modules/sipt/ss7_parser.c. The issue arises when the argument length is manipulated, causing a buffer overflow. It can be exploited remotely and affects versions up to 6.0.7 and 6.1.3. Upgrading to versions 6.0.8 or 6.1.4 fixes the problem.

Detection Guidance

Check Kamailio version with 'kamailio -v' or 'kamailio -I'. If running versions 6.0.7 or 6.1.3 or earlier, the system is vulnerable. Monitor logs for sipt module errors or crashes during ISUP message processing.

Impact Analysis

The vulnerability may allow remote attackers to cause a denial of service or execute arbitrary code by sending malformed ISUP messages. This could disrupt VoIP services, leading to call failures or system crashes. The impact depends on how Kamailio is deployed in your environment.

Mitigation Strategies
  • Upgrade Kamailio to version 6.0.8 or 6.1.4 immediately using package manager or source compilation.
  • Apply the patch 3667bebf8d0bea07ed16218fd921d07db87aeb21 if upgrading is not immediately possible.
  • Restart Kamailio service after upgrade to ensure patched version is active.

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