CVE-2026-5996

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: HIGH) published 2026-04-10. 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 security vulnerability has been detected in Totolink A7100RU 7.4cu.2313_b20191024. The affected element is the function setAdvancedInfoShow of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument tty_server leads to os command injection. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
76.3%
KEV
Not listed

Published

April 10, 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_168/README.md at main · Litengzheng/vuldb_new · GitHub

https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_168/README.md
generic

Submit #792044: Totolink A7100RU 7.4cu.2313_b20191024 Command Injection

https://vuldb.com/submit/792044

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 44× 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 136 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
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  9. 2026-07-11 08:27 UTCEPSS rescore
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  11. 2026-07-09 19:10 UTCEPSS rescore
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  15. 2026-07-07 13:46 UTCEPSS rescore
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  17. 2026-07-06 16:27 UTCEPSS rescore
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  19. 2026-07-06 02:23 UTCEPSS rescore
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  21. 2026-07-05 02:31 UTCEPSS rescore
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  25. 2026-07-01 15:07 UTCEPSS rescore
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  1. 2026-06-30 23:22 UTCEPSS rescore
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  3. 2026-06-28 04:56 UTCEPSS rescore
  4. 2026-06-27 03:08 UTCEPSS rescore
  5. 2026-06-25 13:50 UTCEPSS rescore
  6. 2026-06-24 14:05 UTCEPSS rescore
  7. 2026-06-23 21:33 UTCEPSS rescore
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  9. 2026-06-22 14:25 UTCEPSS rescore
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  11. 2026-06-21 14:56 UTCEPSS rescore
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  20. 2026-06-16 17:53 UTCEPSS rescore
  21. 2026-06-15 17:49 UTCEPSS rescore
  22. 2026-06-15 17:49 UTCEPSS rescore
  23. 2026-06-15 04:43 UTCEG score recompute
  24. 2026-06-15 04:43 UTCGHSA enrichment
  25. 2026-06-14 23:18 UTCEPSS rescore
  26. 2026-06-13 23:00 UTCEPSS rescore
  27. 2026-06-12 23:12 UTCEPSS rescore
  28. 2026-06-12 23:12 UTCEPSS rescore
  29. 2026-06-12 04:00 UTCEG score recompute
  30. 2026-06-12 04:00 UTCGHSA enrichment
  31. 2026-06-12 00:09 UTCEG score recompute
  32. 2026-06-12 00:09 UTCGHSA enrichment
  33. 2026-06-11 20:17 UTCEG score recompute
  34. 2026-06-11 20:17 UTCGHSA enrichment
  35. 2026-06-11 14:00 UTCEPSS rescore
  36. 2026-06-10 22:19 UTCEPSS rescore
  37. 2026-06-10 20:18 UTCEG score recompute
  38. 2026-06-10 20:18 UTCGHSA enrichment
  39. 2026-06-10 16:26 UTCEG score recompute
  40. 2026-06-10 16:26 UTCGHSA enrichment
  41. 2026-06-10 13:22 UTCEPSS rescore
  42. 2026-06-10 12:35 UTCEG score recompute
  43. 2026-06-10 12:35 UTCGHSA enrichment
  44. 2026-06-10 08:44 UTCEG score recompute
  45. 2026-06-10 08:44 UTCGHSA enrichment
  46. 2026-06-10 04:53 UTCEG score recompute
  47. 2026-06-10 04:53 UTCGHSA enrichment
  48. 2026-06-10 00:58 UTCEG score recompute
  49. 2026-06-10 00:58 UTCGHSA enrichment
  50. 2026-06-09 16:39 UTCEG score recompute
  51. 2026-06-09 16:39 UTCGHSA enrichment
  52. 2026-06-09 12:48 UTCEG score recompute
  53. 2026-06-09 12:48 UTCGHSA enrichment
  54. 2026-06-08 14:17 UTCEPSS rescore
  55. 2026-06-08 12:24 UTCEG score recompute
  56. 2026-06-08 12:24 UTCGHSA enrichment
  57. 2026-06-08 08:17 UTCEG score recompute
  58. 2026-06-08 08:17 UTCGHSA enrichment
  59. 2026-06-08 04:26 UTCEG score recompute
  60. 2026-06-08 04:26 UTCGHSA enrichment
  61. 2026-06-08 00:34 UTCEG score recompute
  62. 2026-06-08 00:34 UTCGHSA enrichment
  63. 2026-06-07 19:54 UTCEG score recompute
  64. 2026-06-07 19:54 UTCGHSA enrichment
  65. 2026-06-07 16:03 UTCEG score recompute
  66. 2026-06-07 16:03 UTCGHSA enrichment
  67. 2026-06-07 15:25 UTCEPSS rescore
  68. 2026-06-07 12:10 UTCEG score recompute
  69. 2026-06-07 12:10 UTCGHSA enrichment
  70. 2026-06-07 08:18 UTCEG score recompute
  71. 2026-06-07 08:18 UTCGHSA enrichment
  72. 2026-06-06 13:47 UTCEPSS rescore
  73. 2026-06-05 22:47 UTCEPSS rescore
  74. 2026-06-05 06:10 UTCEPSS rescore
  75. 2026-06-04 13:12 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-5996?
CVE-2026-5996 is a critical vulnerability published on April 10, 2026. A security vulnerability has been detected in Totolink A7100RU 7.4cu.2313b20191024. The affected element is the function setAdvancedInfoShow of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument ttyserver leads to os command injection. It is possible to…
When was CVE-2026-5996 disclosed?
CVE-2026-5996 was first published in the National Vulnerability Database on April 10, 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-2026-5996 actively exploited?
CVE-2026-5996 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 76.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-5996?
CVE-2026-5996 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-5996?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-5996, 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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