CVE-2026-31256 — HIGH (7.5)

Vulnerability Description

A null pointer dereference vulnerability exists in the RTSP service of the MERCURY MIPC252W 1.0.5 Build 230306 Rel.79931n. During the processing of a SETUP request for the path rtsp://<IP>:554/stream1/track2, the device fails to properly validate the Transport header field. When this header is improperly constructed, the RTSP service can dereference a NULL pointer during request parsing. Successful exploitation causes the device to crash and automatically reboot.

CVSS Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Mercurycom	Mipc252W Firmware	1.0.5
Mercurycom	Mipc252W	-

Related Weaknesses (CWE)

CWE-476

References

https://github.com/izxnfirh8148/CVE_REQUESTS_references/blob/main/MERCURY_MIPC25ExploitThird Party Advisory
https://github.com/izxnfirh8148/CVE_REQUESTS_references/blob/main/MERCURY_MIPC25ExploitThird Party Advisory

FAQ

What is CVE-2026-31256?

CVE-2026-31256 is a vulnerability with a CVSS score of 7.5 (HIGH). A null pointer dereference vulnerability exists in the RTSP service of the MERCURY MIPC252W 1.0.5 Build 230306 Rel.79931n. During the processing of a SETUP request for the path rtsp://<IP>:554/stream1...

How severe is CVE-2026-31256?

CVE-2026-31256 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-31256?

Check the references section above for vendor advisories and patch information. Affected products include: Mercurycom Mipc252W Firmware, Mercurycom Mipc252W.