CVE-2026-51606

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-09. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: Elevated riskExposed: 0

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

An improper input handling vulnerability in the RTSP service of Tenda CP3 V3.0 (firmware V31.1.9.91) causes the device to abruptly terminate the TCP connection with a RST packet when a request containing an oversized field value is received, without returning any RFC 2326-compliant error response. This behavior affects the request-line URL field and header field values across multiple RTSP request types.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
65(Attend)
EG Risk 65/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

July 9, 2026

Last Modified

July 10, 2026

Advisory Details (1)

Auto-updated Jul 9, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

cve_ID_report/Tenda_CP3_V3.0/Tenda_CP3_V3.0_5th/README.md at main · kkkk2222874/cve_ID_report · GitHub

https://github.com/kkkk2222874/cve_ID_report/blob/main/Tenda_CP3_V3.0/Tenda_CP3_V3.0_5th/README.md

Vendor Advisories for CVE-2026-51606(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 18× in last 7d / 108× 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.

Showing the most recent 100 of 166 total refreshes for this CVE.

  1. 2026-08-30 06:59 UTCEG score recompute
  2. 2026-08-30 06:59 UTCGHSA enrichment
  3. 2026-08-30 01:22 UTCEPSS rescore
  4. 2026-08-28 21:41 UTCEPSS rescore
  5. 2026-08-27 21:48 UTCEG score recompute
  6. 2026-08-27 21:48 UTCGHSA enrichment
  7. 2026-08-27 14:25 UTCEPSS rescore
  8. 2026-08-27 01:15 UTCEG score recompute
  9. 2026-08-27 01:15 UTCGHSA enrichment
  10. 2026-08-26 14:46 UTCEPSS rescore
  11. 2026-08-26 03:59 UTCEG score recompute
  12. 2026-08-26 03:59 UTCGHSA enrichment
  13. 2026-08-25 13:49 UTCEPSS rescore
  14. 2026-08-25 08:00 UTCGHSA enrichment
  15. 2026-08-24 20:23 UTCEG score recompute
  16. 2026-08-24 20:23 UTCGHSA enrichment
  17. 2026-08-24 03:59 UTCGHSA enrichment
  18. 2026-08-23 14:24 UTCGHSA enrichment
  19. 2026-08-23 02:51 UTCEG score recompute
  20. 2026-08-23 02:50 UTCGHSA enrichment
  21. 2026-08-23 00:19 UTCEPSS rescore
  22. 2026-08-22 15:16 UTCGHSA enrichment
  23. 2026-08-22 03:42 UTCEG score recompute
  24. 2026-08-22 03:42 UTCGHSA enrichment
  25. 2026-08-21 23:49 UTCEPSS rescore
Show 75 more
  1. 2026-08-21 15:27 UTCGHSA enrichment
  2. 2026-08-21 03:54 UTCEG score recompute
  3. 2026-08-21 03:53 UTCGHSA enrichment
  4. 2026-08-20 22:55 UTCEPSS rescore
  5. 2026-08-20 15:20 UTCGHSA enrichment
  6. 2026-08-20 01:53 UTCEG score recompute
  7. 2026-08-20 01:53 UTCGHSA enrichment
  8. 2026-08-19 17:04 UTCEPSS rescore
  9. 2026-08-19 10:17 UTCGHSA enrichment
  10. 2026-08-18 22:27 UTCEG score recompute
  11. 2026-08-18 22:27 UTCGHSA enrichment
  12. 2026-08-18 13:48 UTCEPSS rescore
  13. 2026-08-18 10:47 UTCGHSA enrichment
  14. 2026-08-17 22:19 UTCEG score recompute
  15. 2026-08-17 22:19 UTCGHSA enrichment
  16. 2026-08-17 13:47 UTCEPSS rescore
  17. 2026-08-17 08:26 UTCGHSA enrichment
  18. 2026-08-16 20:52 UTCEG score recompute
  19. 2026-08-16 20:52 UTCGHSA enrichment
  20. 2026-08-16 14:56 UTCEPSS rescore
  21. 2026-08-16 09:19 UTCEG score recompute
  22. 2026-08-16 09:19 UTCGHSA enrichment
  23. 2026-08-16 02:14 UTCEPSS rescore
  24. 2026-08-15 21:46 UTCGHSA enrichment
  25. 2026-08-15 10:13 UTCEG score recompute
  26. 2026-08-15 10:13 UTCGHSA enrichment
  27. 2026-08-15 01:30 UTCEPSS rescore
  28. 2026-08-14 22:40 UTCGHSA enrichment
  29. 2026-08-14 11:07 UTCGHSA enrichment
  30. 2026-08-13 23:34 UTCEG score recompute
  31. 2026-08-13 23:34 UTCGHSA enrichment
  32. 2026-08-13 22:00 UTCEPSS rescore
  33. 2026-08-13 11:57 UTCGHSA enrichment
  34. 2026-08-13 00:24 UTCEG score recompute
  35. 2026-08-13 00:24 UTCGHSA enrichment
  36. 2026-08-12 13:51 UTCEPSS rescore
  37. 2026-08-12 12:51 UTCGHSA enrichment
  38. 2026-08-12 01:17 UTCGHSA enrichment
  39. 2026-08-11 13:44 UTCEG score recompute
  40. 2026-08-11 13:44 UTCGHSA enrichment
  41. 2026-08-11 02:11 UTCEG score recompute
  42. 2026-08-11 02:11 UTCGHSA enrichment
  43. 2026-08-11 00:00 UTCEPSS rescore
  44. 2026-08-10 14:38 UTCGHSA enrichment
  45. 2026-08-10 03:05 UTCGHSA enrichment
  46. 2026-08-09 15:32 UTCEG score recompute
  47. 2026-08-09 15:32 UTCGHSA enrichment
  48. 2026-08-09 13:46 UTCEPSS rescore
  49. 2026-08-09 03:59 UTCEG score recompute
  50. 2026-08-09 03:59 UTCGHSA enrichment
  51. 2026-08-08 16:37 UTCEPSS rescore
  52. 2026-08-08 16:26 UTCGHSA enrichment
  53. 2026-08-08 04:52 UTCGHSA enrichment
  54. 2026-08-07 17:19 UTCEG score recompute
  55. 2026-08-07 17:19 UTCGHSA enrichment
  56. 2026-08-07 05:46 UTCGHSA enrichment
  57. 2026-08-06 18:13 UTCEG score recompute
  58. 2026-08-06 18:13 UTCGHSA enrichment
  59. 2026-08-06 13:47 UTCEPSS rescore
  60. 2026-08-06 06:40 UTCEG score recompute
  61. 2026-08-06 06:40 UTCGHSA enrichment
  62. 2026-08-05 19:17 UTCEPSS rescore
  63. 2026-08-05 19:06 UTCGHSA enrichment
  64. 2026-08-05 07:33 UTCGHSA enrichment
  65. 2026-08-04 19:53 UTCEG score recompute
  66. 2026-08-04 19:53 UTCGHSA enrichment
  67. 2026-08-04 15:10 UTCEPSS rescore
  68. 2026-08-04 10:39 UTCEPSS rescore
  69. 2026-08-04 08:20 UTCGHSA enrichment
  70. 2026-08-03 19:12 UTCEG score recompute
  71. 2026-08-03 19:12 UTCGHSA enrichment
  72. 2026-08-03 10:36 UTCEPSS rescore
  73. 2026-08-03 07:38 UTCGHSA enrichment
  74. 2026-08-02 19:51 UTCGHSA enrichment
  75. 2026-08-02 08:18 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-51606?
CVE-2026-51606 is a high vulnerability published on July 9, 2026. An improper input handling vulnerability in the RTSP service of Tenda CP3 V3.0 (firmware V31.1.9.91) causes the device to abruptly terminate the TCP connection with a RST packet when a request containing an oversized field value is received, without returning any RFC 2326-compliant error response.…
When was CVE-2026-51606 disclosed?
CVE-2026-51606 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-2026-51606 actively exploited?
CVE-2026-51606 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 62.0% of all scored CVEs.
What is the CVSS score of CVE-2026-51606?
CVE-2026-51606 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-51606?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-51606, 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.

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