CVE-2025-12207

Description

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 performed locally. The exploit has been disclosed to the public and may be used. The actual existence of this vulnerability is currently in question. This attack requires manipulating config files which might not be a realistic scenario in many cases. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS v3.1 Score

3.3

LOW

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Weakness Type (CWE)

CWE-404 CWE-404

CWE-476 CWE-476

Affected Products

Vendor	Product	Versions
kamailio	kamailio	All

References

Exploits

https://shimo.im/docs/vVqRMVMlrycMO63y/ https://shimo.im/docs/vVqRMVMlrycMO63y

Other References

https://vuldb.com/?ctiid.329877 https://vuldb.com/?id.329877 https://vuldb.com/?submit.673241 https://www.openwall.com/lists/oss-security/2025/11/02/3 http://www.openwall.com/lists/oss-security/2025/10/27/12 http://www.openwall.com/lists/oss-security/2025/10/27/8 https://www.openwall.com/lists/oss-security/2025/10/27/8

Frequently Asked Questions

What is CVE-2025-12207? +

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 performed locally. The exploit has been disclosed to the public and may be used. The actual existence of this vulnerability is currently in question. This attack requires manipulating config files which might not be a realistic scenario in many cases. The vendor was contacted early about this disclosure but did not respond in any way. It has a CVSS v3.1 base score of 3.3 (LOW).

How severe is CVE-2025-12207? +

CVE-2025-12207 has a CVSS v3.1 score of 3.3 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

What products are affected by CVE-2025-12207? +

CVE-2025-12207 affects products from kamailio, specifically: kamailio. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-12207? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-11317

A denial of service security issue exists in the affected product. The security issue stems from a fault occurring when …

CVE-2025-6202

Vulnerability in SK Hynix DDR5 on x86 allows a local attacker to trigger Rowhammer bit flips impacting the Hardware Integrity …

CVE-2026-45174

Idira Endpoint Privilege Manager Linux Agent versions prior to 26.5 allow a local attacker to potentially compromise the agent daemon …

CVE-2024-31611 9.1

SeaCMS 12.9 has a file deletion vulnerability via admin_template.php.

CVE-2025-5867 8.0

A vulnerability classified as critical was found in RT-Thread 5.1.0. This vulnerability affects the function csys_sendto of the file rt-thread/components/lwp/lwp_syscall.c. …

CVE-2025-38385 7.8

In the Linux kernel, the following vulnerability has been resolved: net: usb: lan78xx: fix WARN in __netif_napi_del_locked on disconnect Remove …