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Vulnerability record · CVE-2026-51599 · published 9 July 2026

CVE-2026-51599: Improper input validation vulnerability

An insufficient input validation vulnerability in the RTSP service of MERCURY MIPC252W v1.0.5 Build 230306 Rel.79931n allows an unauthenticated remote attacker to render an individual TCP connection temporarily unusable via sending an RTSP request with a Content-Length header but no corresponding message body. The affected RTSP parser enters a body-waiting state instead of rejecting the malformed request, causing all subsequent data on the connection to be silently consumed as body content until a server-side timeout closes the connection.

9.8 CVSS 3.1 Critical EPSS 0.63% · top 51.8% CWE-20 · Improper input validation Deferred
9.8CVSS 3.1 base score
0.63%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
10 Jul 2026Last modified by NVD

Description

An insufficient input validation vulnerability in the RTSP service of MERCURY MIPC252W v1.0.5 Build 230306 Rel.79931n allows an unauthenticated remote attacker to render an individual TCP connection temporarily unusable via sending an RTSP request with a Content-Length header but no corresponding message body. The affected RTSP parser enters a body-waiting state instead of rejecting the malformed request, causing all subsequent data on the connection to be silently consumed as body content until a server-side timeout closes the connection.

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

References

LinkTags
https://github.com/kkkk2222874/cve_ID_report/blob/main/MERCURY_MIPC252W/MERCURY_MIPC252W_7th/README.md
https://github.com/kkkk2222874/cve_ID_report/blob/main/MERCURY_MIPC252W/MERCURY_MIPC252W_7th/README.md

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Source: NIST National Vulnerability Database (record CVE-2026-51599), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.