CVE-2026-79911

CRITICALPre-NVD 10.010.0—
EchelonGraph scoreHIGH confidence

Score 10.0 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-26. a secondary CVSS source baseline 10.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 10.0Exploit: Elevated riskExposed: 0

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

A security vulnerability has been detected in TOTOLINK N600R 4.3.0cu.7647_B20210106. The affected element is the function setSystemConfig of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument Hostname leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used.

CVSS v3
10.0
EG Score
10.0(high)
EG Risk
76(Attend)
EG Risk 76/100SSVC: 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
Severity100% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
49%
KEV
Not listed

Published

August 25, 2026

Last Modified

August 27, 2026

Advisory Details (2)

Auto-updated Sep 17, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

TOTOLINK | Wi-Fi 7, Mesh, 5G & Enterprise Networking

https://www.totolink.net/
generic🟡 PoC Available

WAVLINK-WN530H4-Command-Injection-in-set_add_routing/TOTOLINK_N600R_cstecgi_strcpy_sprintf_Multi_Function_Stack_Overflow.md at main · dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing · GitHub

https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/TOTOLINK_N600R_cstecgi_strcpy_sprintf_Multi_Function_Stack_Overflow.md

Vendor Advisories for CVE-2026-79911(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 50× in last 7d / 187× 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 187 total refreshes for this CVE.

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

Related CVEs

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Frequently asked(5)

What is CVE-2026-79911?
CVE-2026-79911 is a critical vulnerability published on August 25, 2026. A security vulnerability has been detected in TOTOLINK N600R 4.3.0cu.7647_B20210106. The affected element is the function setSystemConfig of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument Hostname leads to stack-based buffer overflow. It is possible to…
When was CVE-2026-79911 disclosed?
CVE-2026-79911 was first published in the National Vulnerability Database on August 25, 2026, with the most recent update on August 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-79911 actively exploited?
CVE-2026-79911 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 50.6% of all scored CVEs.
What is the CVSS score of CVE-2026-79911?
CVE-2026-79911 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2026-79911?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-79911, 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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