CVE-2026-86299

CRITICALPre-NVD 9.99.9—
EchelonGraph scoreHIGH confidence

Score 9.9 from GitHub Security Advisory (severity: HIGH) published 2026-09-07. a secondary CVSS source baseline 9.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
9.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 9.9Exploit: Elevated riskExposed: 0

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

A vulnerability was detected in Linksys RE7000 2.0.15. This affects the function platform_event_pingTest of the file /cgi-bin/json.cgi?PingTest of the component PingTest Handler. The manipulation of the argument pingTestIp/pingTestPktSize/pingTestTimes results in os command injection. The attack can be launched remotely. The exploit is now public and may be used.

CVSS v3
9.9
EG Score
9.9(high)
EG Risk
61(Track*)
EG Risk 61/100SSVC: Track*

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
Severity99% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
2%
EPSS %ILE
80%
KEV
Not listed

Published

September 7, 2026

Last Modified

September 11, 2026

Advisory Details (2)

Auto-updated Sep 18, 2026
No patch confirmed yet.
generic

Linksys | Networking & WiFi Technology

https://www.linksys.com/
generic

somevul/Linksys_RE7000_v2_PingTest_Command_Injection.md at main · limou89/somevul · GitHub

https://github.com/limou89/somevul/blob/main/Linksys_RE7000_v2_PingTest_Command_Injection.md

Vendor Advisories for CVE-2026-86299(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 55× in last 7d / 107× 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 107 total refreshes for this CVE.

  1. 2026-09-20 03:08 UTCGHSA enrichment
  2. 2026-09-19 23:15 UTCGHSA enrichment
  3. 2026-09-19 19:24 UTCEG score recompute
  4. 2026-09-19 19:24 UTCGHSA enrichment
  5. 2026-09-19 15:32 UTCGHSA enrichment
  6. 2026-09-19 11:40 UTCGHSA enrichment
  7. 2026-09-19 07:45 UTCGHSA enrichment
  8. 2026-09-19 03:51 UTCGHSA enrichment
  9. 2026-09-18 23:59 UTCGHSA enrichment
  10. 2026-09-18 20:08 UTCEG score recompute
  11. 2026-09-18 20:08 UTCGHSA enrichment
  12. 2026-09-18 19:28 UTCEPSS rescore
  13. 2026-09-18 16:14 UTCGHSA enrichment
  14. 2026-09-18 11:49 UTCGHSA enrichment
  15. 2026-09-18 07:57 UTCGHSA enrichment
  16. 2026-09-18 04:05 UTCGHSA enrichment
  17. 2026-09-18 00:13 UTCGHSA enrichment
  18. 2026-09-17 20:21 UTCEG score recompute
  19. 2026-09-17 20:21 UTCGHSA enrichment
  20. 2026-09-17 19:32 UTCEPSS rescore
  21. 2026-09-17 14:41 UTCGHSA enrichment
  22. 2026-09-17 10:49 UTCGHSA enrichment
  23. 2026-09-17 06:50 UTCGHSA enrichment
  24. 2026-09-17 02:59 UTCGHSA enrichment
  25. 2026-09-16 22:29 UTCGHSA enrichment
Show 75 more
  1. 2026-09-16 18:20 UTCEG score recompute
  2. 2026-09-16 18:20 UTCGHSA enrichment
  3. 2026-09-16 14:09 UTCEPSS rescore
  4. 2026-09-16 13:55 UTCGHSA enrichment
  5. 2026-09-16 09:46 UTCGHSA enrichment
  6. 2026-09-16 05:53 UTCEG score recompute
  7. 2026-09-16 05:53 UTCGHSA enrichment
  8. 2026-09-16 05:15 UTCEPSS rescore
  9. 2026-09-16 02:02 UTCGHSA enrichment
  10. 2026-09-15 22:10 UTCGHSA enrichment
  11. 2026-09-15 18:18 UTCGHSA enrichment
  12. 2026-09-15 14:15 UTCGHSA enrichment
  13. 2026-09-15 10:23 UTCGHSA enrichment
  14. 2026-09-15 06:30 UTCEG score recompute
  15. 2026-09-15 06:30 UTCGHSA enrichment
  16. 2026-09-15 03:12 UTCEPSS rescore
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-15 02:38 UTCGHSA enrichment
  19. 2026-09-14 22:46 UTCGHSA enrichment
  20. 2026-09-14 18:54 UTCGHSA enrichment
  21. 2026-09-14 15:02 UTCGHSA enrichment
  22. 2026-09-14 11:10 UTCGHSA enrichment
  23. 2026-09-14 07:18 UTCGHSA enrichment
  24. 2026-09-14 03:27 UTCGHSA enrichment
  25. 2026-09-13 23:35 UTCGHSA enrichment
  26. 2026-09-13 19:44 UTCEG score recompute
  27. 2026-09-13 19:44 UTCGHSA enrichment
  28. 2026-09-13 15:52 UTCGHSA enrichment
  29. 2026-09-13 12:00 UTCGHSA enrichment
  30. 2026-09-13 08:08 UTCGHSA enrichment
  31. 2026-09-13 04:17 UTCGHSA enrichment
  32. 2026-09-13 00:25 UTCGHSA enrichment
  33. 2026-09-12 20:33 UTCGHSA enrichment
  34. 2026-09-12 16:41 UTCEG score recompute
  35. 2026-09-12 16:41 UTCGHSA enrichment
  36. 2026-09-12 12:50 UTCGHSA enrichment
  37. 2026-09-12 08:58 UTCGHSA enrichment
  38. 2026-09-12 05:06 UTCGHSA enrichment
  39. 2026-09-12 01:15 UTCGHSA enrichment
  40. 2026-09-11 21:23 UTCEG score recompute
  41. 2026-09-11 21:23 UTCGHSA enrichment
  42. 2026-09-11 21:20 UTCNVD updateCVSS v4 → 8.6
  43. 2026-09-11 20:47 UTCEG score recompute
  44. 2026-09-11 20:47 UTCGHSA enrichment
  45. 2026-09-11 20:43 UTCMITRE cvelistV5CVSS v4 → 9.4
  46. 2026-09-11 17:54 UTCEG score recompute
  47. 2026-09-11 17:54 UTCGHSA enrichment
  48. 2026-09-11 14:53 UTCEPSS rescore
  49. 2026-09-11 14:53 UTCEPSS rescore
  50. 2026-09-11 14:02 UTCGHSA enrichment
  51. 2026-09-11 10:11 UTCEG score recompute
  52. 2026-09-11 10:11 UTCGHSA enrichment
  53. 2026-09-11 06:19 UTCGHSA enrichment
  54. 2026-09-11 02:27 UTCGHSA enrichment
  55. 2026-09-10 22:35 UTCGHSA enrichment
  56. 2026-09-10 18:43 UTCGHSA enrichment
  57. 2026-09-10 14:51 UTCGHSA enrichment
  58. 2026-09-10 11:00 UTCEG score recompute
  59. 2026-09-10 11:00 UTCGHSA enrichment
  60. 2026-09-10 07:02 UTCGHSA enrichment
  61. 2026-09-10 03:10 UTCGHSA enrichment
  62. 2026-09-09 23:18 UTCGHSA enrichment
  63. 2026-09-09 18:24 UTCGHSA enrichment
  64. 2026-09-09 14:32 UTCGHSA enrichment
  65. 2026-09-09 10:40 UTCGHSA enrichment
  66. 2026-09-09 06:48 UTCGHSA enrichment
  67. 2026-09-09 02:56 UTCGHSA enrichment
  68. 2026-09-08 23:04 UTCEG score recompute
  69. 2026-09-08 23:04 UTCGHSA enrichment
  70. 2026-09-08 22:01 UTCEPSS rescore
  71. 2026-09-08 13:53 UTCGHSA enrichment
  72. 2026-09-08 11:42 UTCGHSA enrichment
  73. 2026-09-08 07:41 UTCGHSA enrichment
  74. 2026-09-08 03:50 UTCGHSA enrichment
  75. 2026-09-07 23:57 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-86299?
CVE-2026-86299 is a critical vulnerability published on September 7, 2026. A vulnerability was detected in Linksys RE7000 2.0.15. This affects the function platformeventpingTest of the file /cgi-bin/json.cgi?PingTest of the component PingTest Handler. The manipulation of the argument pingTestIp/pingTestPktSize/pingTestTimes results in os command injection. The attack can…
When was CVE-2026-86299 disclosed?
CVE-2026-86299 was first published in the National Vulnerability Database on September 7, 2026, with the most recent update on September 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-86299 actively exploited?
CVE-2026-86299 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 20.4% of all scored CVEs.
What is the CVSS score of CVE-2026-86299?
CVE-2026-86299 has a CVSS v3 base score of 9.9 (NVD).
How do I remediate CVE-2026-86299?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-86299, 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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