CVE-2026-51599

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-09. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 5 sources updated this weekElevated
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
9.8
EG Score
9.8(high)
EPSS
35.0%
KEV
Not listed

Published

July 9, 2026

Last Modified

July 10, 2026

Advisory Details (1)

Auto-updated Jul 11, 2026
No patch confirmed yet.
generic

cve_ID_report/MERCURY_MIPC252W/MERCURY_MIPC252W_7th/README.md at main · kkkk2222874/cve_ID_report · GitHub

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

Vendor Advisories for CVE-2026-51599(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 54× in last 7d / 54× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-16 00:41 UTCEG score recompute
  2. 2026-07-16 00:41 UTCGHSA enrichment
  3. 2026-07-15 20:36 UTCEG score recompute
  4. 2026-07-15 20:36 UTCGHSA enrichment
  5. 2026-07-15 16:57 UTCEPSS rescore
  6. 2026-07-15 16:57 UTCEPSS rescore
  7. 2026-07-15 16:31 UTCEG score recompute
  8. 2026-07-15 16:31 UTCGHSA enrichment
  9. 2026-07-15 12:27 UTCEG score recompute
  10. 2026-07-15 12:26 UTCGHSA enrichment
  11. 2026-07-15 08:22 UTCEG score recompute
  12. 2026-07-15 08:22 UTCGHSA enrichment
  13. 2026-07-15 04:18 UTCEG score recompute
  14. 2026-07-15 04:18 UTCGHSA enrichment
  15. 2026-07-15 02:00 UTCEPSS rescore
  16. 2026-07-15 02:00 UTCEPSS rescore
  17. 2026-07-15 00:12 UTCEG score recompute
  18. 2026-07-15 00:12 UTCGHSA enrichment
  19. 2026-07-14 20:07 UTCEG score recompute
  20. 2026-07-14 20:07 UTCGHSA enrichment
  21. 2026-07-14 16:00 UTCEG score recompute
  22. 2026-07-14 16:00 UTCGHSA enrichment
  23. 2026-07-14 11:56 UTCEG score recompute
  24. 2026-07-14 11:55 UTCGHSA enrichment
  25. 2026-07-14 07:51 UTCEG score recompute
Show 29 more
  1. 2026-07-14 07:50 UTCGHSA enrichment
  2. 2026-07-14 03:45 UTCEG score recompute
  3. 2026-07-14 03:45 UTCGHSA enrichment
  4. 2026-07-13 23:41 UTCEG score recompute
  5. 2026-07-13 23:41 UTCGHSA enrichment
  6. 2026-07-13 22:31 UTCEPSS rescore
  7. 2026-07-13 19:37 UTCEG score recompute
  8. 2026-07-13 19:36 UTCGHSA enrichment
  9. 2026-07-13 15:31 UTCEG score recompute
  10. 2026-07-13 15:31 UTCGHSA enrichment
  11. 2026-07-13 11:28 UTCEG score recompute
  12. 2026-07-13 11:28 UTCGHSA enrichment
  13. 2026-07-13 07:24 UTCEG score recompute
  14. 2026-07-13 07:24 UTCGHSA enrichment
  15. 2026-07-13 06:13 UTCEPSS rescore
  16. 2026-07-13 06:13 UTCEPSS rescore
  17. 2026-07-13 03:20 UTCEG score recompute
  18. 2026-07-13 03:20 UTCGHSA enrichment
  19. 2026-07-12 23:15 UTCEG score recompute
  20. 2026-07-12 23:15 UTCGHSA enrichment
  21. 2026-07-12 19:10 UTCEG score recompute▲ 9.80
  22. 2026-07-12 19:10 UTCGHSA enrichment
  23. 2026-07-12 05:46 UTCEPSS rescore
  24. 2026-07-11 08:27 UTCEPSS rescore
  25. 2026-07-11 08:27 UTCEPSS rescore
  26. 2026-07-10 17:52 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
  27. 2026-07-09 17:54 UTCNVD update
  28. 2026-07-09 17:18 UTCEG score recompute
  29. 2026-07-09 17:15 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-51599?
CVE-2026-51599 is a critical vulnerability published on July 9, 2026. 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…
When was CVE-2026-51599 disclosed?
CVE-2026-51599 was first published in the National Vulnerability Database on July 9, 2026, with the most recent update on July 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-51599 actively exploited?
CVE-2026-51599 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 35.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-51599?
CVE-2026-51599 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-51599?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-51599, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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