CVE-2026-51600

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: 1%CVSS: 7.5Exploit: Elevated riskExposed: 0

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

Tenda CP3 V3.0 firmware V31.1.9.91 does not validate the Content-Length header field in RTSP requests (including DESCRIBE, SETUP, and PLAY methods). When a request carrying a Content-Length header is received without a corresponding message body, the RTSP parser enters a persistent body-awaiting state, causing the affected TCP connection to become permanently non-functional. The device does not actively close the connection, resulting in a TCP resource leak. This issue can be exploited by an unauthenticated remote attacker to cause a denial-of-service condition.

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
1%
EPSS %ILE
45%
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/Tenda_CP3_V3.0_1th/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/Tenda_CP3_V3.0_1th/README.md

Vendor Advisories for CVE-2026-51600(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 25× in last 7d / 116× 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 158 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-51600?
CVE-2026-51600 is a high vulnerability published on July 9, 2026. Tenda CP3 V3.0 firmware V31.1.9.91 does not validate the Content-Length header field in RTSP requests (including DESCRIBE, SETUP, and PLAY methods). When a request carrying a Content-Length header is received without a corresponding message body, the RTSP parser enters a persistent body-awaiting…
When was CVE-2026-51600 disclosed?
CVE-2026-51600 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-2026-51600 actively exploited?
CVE-2026-51600 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 55.2% of all scored CVEs.
What is the CVSS score of CVE-2026-51600?
CVE-2026-51600 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-51600?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-51600, 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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