CVE-2026-5851

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: HIGH) published 2026-04-09. 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: 14%CVSS: 9.8Exploit: NoneExposed: 0

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

A security flaw has been discovered in Totolink A7100RU 7.4cu.2313_b20191024. This impacts the function setUPnPCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument enable results in os command injection. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
96.2%
KEV
Not listed

Published

April 9, 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_157/README.md at main · Litengzheng/vuldb_new · GitHub

https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_157/README.md
generic

Submit #791271: Totolink A7100RU 7.4cu.2313_b20191024 Command Injection

https://vuldb.com/submit/791271

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 37× 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 130 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. 2026-07-13 06:13 UTCEPSS rescore
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  8. 2026-07-12 05:46 UTCEPSS rescore
  9. 2026-07-11 08:27 UTCEPSS rescore
  10. 2026-07-11 08:27 UTCEPSS rescore
  11. 2026-07-09 19:10 UTCEPSS rescore
  12. 2026-07-09 19:10 UTCEPSS rescore
  13. 2026-07-08 15:16 UTCEPSS rescore
  14. 2026-07-08 15:16 UTCEPSS rescore
  15. 2026-07-07 13:46 UTCEPSS rescore
  16. 2026-07-07 13:46 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
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  23. 2026-07-01 15:07 UTCEPSS rescore
  24. 2026-06-30 23:22 UTCEPSS rescore
  25. 2026-06-28 04:56 UTCEPSS rescore
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  1. 2026-06-27 03:08 UTCEPSS rescore
  2. 2026-06-25 13:50 UTCEPSS rescore
  3. 2026-06-24 14:05 UTCEPSS rescore
  4. 2026-06-23 21:33 UTCEPSS rescore
  5. 2026-06-23 21:33 UTCEPSS rescore
  6. 2026-06-21 01:59 UTCEPSS rescore
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  8. 2026-06-19 19:26 UTCEPSS rescore
  9. 2026-06-19 19:26 UTCEPSS rescore
  10. 2026-06-18 17:52 UTCEPSS rescore
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  12. 2026-06-17 17:53 UTCEPSS rescore
  13. 2026-06-16 17:53 UTCEPSS rescore
  14. 2026-06-15 17:49 UTCEPSS rescore
  15. 2026-06-15 17:49 UTCEPSS rescore
  16. 2026-06-15 05:17 UTCEG score recompute
  17. 2026-06-15 05:17 UTCGHSA enrichment
  18. 2026-06-14 23:18 UTCEPSS rescore
  19. 2026-06-13 23:00 UTCEPSS rescore
  20. 2026-06-12 23:12 UTCEPSS rescore
  21. 2026-06-12 23:12 UTCEPSS rescore
  22. 2026-06-12 04:04 UTCEG score recompute
  23. 2026-06-12 04:04 UTCGHSA enrichment
  24. 2026-06-12 00:20 UTCEG score recompute
  25. 2026-06-12 00:20 UTCGHSA enrichment
  26. 2026-06-11 20:35 UTCEG score recompute
  27. 2026-06-11 20:35 UTCGHSA enrichment
  28. 2026-06-11 14:00 UTCEPSS rescore
  29. 2026-06-10 22:19 UTCEPSS rescore
  30. 2026-06-10 20:00 UTCEG score recompute
  31. 2026-06-10 20:00 UTCGHSA enrichment
  32. 2026-06-10 16:16 UTCEG score recompute
  33. 2026-06-10 16:16 UTCGHSA enrichment
  34. 2026-06-10 13:22 UTCEPSS rescore
  35. 2026-06-10 12:33 UTCEG score recompute
  36. 2026-06-10 12:33 UTCGHSA enrichment
  37. 2026-06-10 08:38 UTCEG score recompute
  38. 2026-06-10 08:38 UTCGHSA enrichment
  39. 2026-06-10 04:55 UTCEG score recompute
  40. 2026-06-10 04:55 UTCGHSA enrichment
  41. 2026-06-10 01:03 UTCEG score recompute
  42. 2026-06-10 01:03 UTCGHSA enrichment
  43. 2026-06-09 16:50 UTCEG score recompute
  44. 2026-06-09 16:50 UTCGHSA enrichment
  45. 2026-06-09 13:07 UTCEG score recompute
  46. 2026-06-09 13:07 UTCGHSA enrichment
  47. 2026-06-08 14:17 UTCEPSS rescore
  48. 2026-06-08 11:45 UTCEG score recompute
  49. 2026-06-08 11:45 UTCGHSA enrichment
  50. 2026-06-08 08:02 UTCEG score recompute
  51. 2026-06-08 08:02 UTCGHSA enrichment
  52. 2026-06-08 04:18 UTCEG score recompute
  53. 2026-06-08 04:18 UTCGHSA enrichment
  54. 2026-06-08 00:34 UTCEG score recompute
  55. 2026-06-08 00:34 UTCGHSA enrichment
  56. 2026-06-07 19:53 UTCEG score recompute
  57. 2026-06-07 19:53 UTCGHSA enrichment
  58. 2026-06-07 16:10 UTCEG score recompute
  59. 2026-06-07 16:10 UTCGHSA enrichment
  60. 2026-06-07 15:25 UTCEPSS rescore
  61. 2026-06-07 12:26 UTCEG score recompute
  62. 2026-06-07 12:26 UTCGHSA enrichment
  63. 2026-06-07 08:42 UTCEG score recompute
  64. 2026-06-07 08:42 UTCGHSA enrichment
  65. 2026-06-06 13:47 UTCEPSS rescore
  66. 2026-06-05 22:47 UTCEPSS rescore
  67. 2026-06-05 06:10 UTCEPSS rescore
  68. 2026-06-05 06:10 UTCEPSS rescore
  69. 2026-06-04 13:12 UTCEPSS rescore
  70. 2026-06-04 13:12 UTCEPSS rescore
  71. 2026-06-02 20:13 UTCEPSS rescore
  72. 2026-06-01 13:52 UTCEPSS rescore
  73. 2026-06-01 13:52 UTCEPSS rescore
  74. 2026-05-31 22:30 UTCEPSS rescore
  75. 2026-05-31 22:30 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-5851?
CVE-2026-5851 is a critical vulnerability published on April 9, 2026. A security flaw has been discovered in Totolink A7100RU 7.4cu.2313_b20191024. This impacts the function setUPnPCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument enable results in os command injection. The attack can be executed remotely. The exploit…
When was CVE-2026-5851 disclosed?
CVE-2026-5851 was first published in the National Vulnerability Database on April 9, 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-2026-5851 actively exploited?
CVE-2026-5851 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 96.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-5851?
CVE-2026-5851 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-5851?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-5851, 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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