CVE-2026-6140

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: HIGH) published 2026-04-13. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 9.8Exploit: Elevated riskExposed: 0

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

A vulnerability was found in Totolink A7100RU 7.4cu.2313_b20191024. This impacts the function UploadFirmwareFile of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Performing a manipulation of the argument FileName results in os command injection. The attack may be initiated remotely. The exploit has been made public and could be used.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
75(Attend)
EG Risk 75/100SSVC: 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
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
2%
EPSS %ILE
82%
KEV
Not listed

Published

April 13, 2026

Last Modified

April 27, 2026

Advisory Details (3)

Auto-updated Sep 9, 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

vuldb_new/A7100RU/vul_193/README.md at main · Litengzheng/vuldb_new · GitHub

https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_193/README.md
generic

Submit #792987: Totolink A7100RU 7.4cu.2313_b20191024 Command Injection

https://vuldb.com/submit/792987

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 3× in last 7d / 25× 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 218 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-6140?
CVE-2026-6140 is a critical vulnerability published on April 13, 2026. A vulnerability was found in Totolink A7100RU 7.4cu.2313_b20191024. This impacts the function UploadFirmwareFile of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Performing a manipulation of the argument FileName results in os command injection. The attack may be initiated remotely.…
When was CVE-2026-6140 disclosed?
CVE-2026-6140 was first published in the National Vulnerability Database on April 13, 2026, with the most recent update on April 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-6140 actively exploited?
CVE-2026-6140 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 18.5% of all scored CVEs.
What is the CVSS score of CVE-2026-6140?
CVE-2026-6140 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-6140?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6140, 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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