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
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 9.8Exploit: NoneExposed: 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)
EPSS
80.5%
KEV
Not listed

Published

April 13, 2026

Last Modified

April 27, 2026

Advisory Details (3)

Auto-updated May 10, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

TOTOLINK

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 10× in last 7d / 39× 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 137 total refreshes for this CVE.

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

Related CVEs(same CWE)

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 80.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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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