CVE-2026-31256

high

A null pointer dereference vulnerability exists in the RTSP service of the MERCURY MIPC252W 1.0.5 Build 230306 Rel.79931n.

Vendor / product: Mercurycom — mipc252w firmware

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://: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

7.5

7.5 (CVSS v3.1)

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

Severity source: NVD CVSS v3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)

Timeline (UTC)

Published: 2026-04-27 19:16

Modified: 2026-11-11 19:10

NVD status: Analyzed

Last synced 1 hour ago

Verified against the source API 2026-11-11 19:10 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

mercurycom / mipc252w_firmware 1.0.5

Weakness classification (CWE)

CWE-476

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

No vendor advisory or patch reference tagged by NVD. Check the references below.

References

https://github.com/izxnfirh8148/CVE_REQUESTS_references/blob/main/MERCURY_MIPC252W/MERCURY... cve@mitre.org
https://github.com/izxnfirh8148/CVE_REQUESTS_references/blob/main/MERCURY_MIPC252W/MERCURY... 134c704f-9b21-4f2e-91b3-4a467353bcc0

Data sources

NVD CVE API 2.0 — fetched 2026-11-11 19:10 UTC · record ↗

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CVE-2026-31256

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Weakness classification (CWE)

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References

Data sources

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