CVE-2026-93962
HighCVSS 8.3Exploitation Probability (EPSS)
Low risk44th percentile - higher than 44% of all known CVEs
Summary
A weakness in Kamailio up to 5.8.8/6.0.7/6.1.4/6.2.0-dev1 affects the shm_malloc function in src/modules/cdp/receiver.c of the CDP Diameter Receiver component. Manipulation leads to a heap-based buffer overflow. The attack can be remote, and the exploit is public. Upgrading to 6.0.8 resolves the issue.
Risk Assessment
Buffer overflow could allow remote code execution or service crash, threatening the integrity of the communication system.
Recommendation
Upgrade Kamailio to version 6.0.8 or later, which includes the fix.
Other vulnerabilities in Kamailio
See all- CVE-2015-1590High
The kamcmd administrative utility and default configuration in kamailio before version 4.3.0 use the /tmp/kamailio_ctl directory.
- CVE-2015-1591High
Versions of kamailio before 4.2.0-2 have a vulnerability that allows local users to gain elevated privileges.
- CVE-2013-7426Critical
CVE-2013-7426 identifies an insecure handling of temporary files in kamailio 4.0.1, specifically concerning the /tmp/kamailio_fifo file. This may lead to unauthorized access to data.
- CVE-2026-52023High
An issue in kamailio v.6.1.1 and before allows a remote attacker to cause a denial of service via the ims_registrar_pcscf module, specifically the pcscf_save_pending/save_pending path and security-agreement parsing in sec_agree.c:parse_sec_agree().
- CVE-2026-52022High
A vulnerability in Kamailio version 6.1.1 and earlier allows a remote attacker to cause a denial of service via the IMS P-CSCF registration handling components.
- CVE-2026-82608High
A vulnerability in Kamailio up to 5.5.0/6.0.7 in the get_4bytes function of the cxdx_avp.c file in the AVP Handler component leads to an out-of-bounds read. The attack can be performed remotely, and the exploit is publicly disclosed.
- CVE-2026-39864Medium
Kamailio before versions 6.0.5 and 5.8.7 contains an out-of-bounds read vulnerability in the auth module. A specially crafted SIP packet can cause a process crash (DoS) after successful user authentication without a database backend.
- CVE-2026-39863High
In Kamailio (formerly OpenSER and SER) prior to versions 6.1.1, 6.0.6, and 5.8.8, an out-of-bounds access vulnerability exists in the core. A remote attacker can send a specially crafted TCP packet, causing a process crash (denial of service). This affects Kamailio instances with TCP or TLS listeners.
Original NVD description (English source)
A weakness has been identified in Kamailio up to 5.8.8/6.0.7/6.1.4/6.2.0-dev1. The impacted element is the function shm_malloc of the file src/modules/cdp/receiver.c of the component CDP Diameter Receiver. Executing a manipulation can lead to heap-based buffer overflow. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 6.0.8 is sufficient to resolve this issue. This patch is called 38711a3e788de0130d48cb485578c482b57d9351/4f62235b6f477b649c5cc18b0c81b4e26c949b98/4f62235b6f477b649c5cc18b0c81b4e26c949b98. You should upgrade the affected component.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS