CVE-2026-9543

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-26. 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 has been found in Totolink N300RH 6.1c.1353_B20190305. Affected is the function setPasswordCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Such manipulation of the argument admpass leads to os command injection. The attack can be executed remotely. The exploit has been disclosed to the public and may be used.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
79.9%
KEV
Not listed

Published

May 26, 2026

Last Modified

May 26, 2026

Advisory Details (2)

Auto-updated Jun 20, 2026
No patch confirmed yet.
generic

TOTOLINK

https://www.totolink.net/
generic

GitHub - A1ester/TOTOLINK-N300RH-Command-Injection: A pre‑authentication OS command injection vulnerability exists in the setPasswordCfg functionality exposed via the web management interface (/cgi-bin/cstecgi.cgi) of the TOTOLINK N300RH V4 router. · GitHub

https://github.com/A1ester/TOTOLINK-N300RH-Command-Injection

Vendor Advisories for CVE-2026-9543(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 6× in last 7d / 77× 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 286 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. 2026-07-13 22:31 UTCEPSS rescore
  5. 2026-07-12 05:46 UTCEPSS rescore
  6. 2026-07-11 08:27 UTCEPSS rescore
  7. 2026-07-09 19:10 UTCEPSS rescore
  8. 2026-07-08 15:16 UTCEPSS rescore
  9. 2026-07-07 13:46 UTCEPSS rescore
  10. 2026-07-06 16:27 UTCEPSS rescore
  11. 2026-07-06 02:23 UTCEPSS rescore
  12. 2026-07-05 02:31 UTCEPSS rescore
  13. 2026-07-04 06:31 UTCEPSS rescore
  14. 2026-07-01 17:04 UTCEG score recompute
  15. 2026-07-01 17:04 UTCGHSA enrichment
  16. 2026-07-01 15:07 UTCEPSS rescore
  17. 2026-06-30 23:22 UTCEPSS rescore
  18. 2026-06-29 19:53 UTCEG score recompute
  19. 2026-06-29 19:53 UTCGHSA enrichment
  20. 2026-06-29 15:54 UTCEG score recompute
  21. 2026-06-29 15:54 UTCGHSA enrichment
  22. 2026-06-29 01:08 UTCEG score recompute
  23. 2026-06-29 01:08 UTCGHSA enrichment
  24. 2026-06-28 14:07 UTCEPSS rescore
  25. 2026-06-28 11:34 UTCEG score recompute
Show 75 more
  1. 2026-06-28 11:34 UTCGHSA enrichment
  2. 2026-06-28 07:38 UTCEG score recompute
  3. 2026-06-28 07:38 UTCGHSA enrichment
  4. 2026-06-28 04:56 UTCEPSS rescore
  5. 2026-06-28 03:15 UTCEG score recompute
  6. 2026-06-28 03:15 UTCGHSA enrichment
  7. 2026-06-27 23:17 UTCEG score recompute
  8. 2026-06-27 23:17 UTCGHSA enrichment
  9. 2026-06-27 19:20 UTCEG score recompute
  10. 2026-06-27 19:20 UTCGHSA enrichment
  11. 2026-06-27 15:23 UTCEG score recompute
  12. 2026-06-27 15:23 UTCGHSA enrichment
  13. 2026-06-27 11:12 UTCEG score recompute
  14. 2026-06-27 11:12 UTCGHSA enrichment
  15. 2026-06-27 07:09 UTCEG score recompute
  16. 2026-06-27 07:09 UTCGHSA enrichment
  17. 2026-06-27 03:08 UTCEPSS rescore
  18. 2026-06-26 22:58 UTCEG score recompute
  19. 2026-06-26 22:58 UTCGHSA enrichment
  20. 2026-06-26 18:48 UTCEG score recompute
  21. 2026-06-26 18:48 UTCGHSA enrichment
  22. 2026-06-26 02:55 UTCEG score recompute
  23. 2026-06-26 02:55 UTCGHSA enrichment
  24. 2026-06-25 20:45 UTCEG score recompute
  25. 2026-06-25 20:45 UTCGHSA enrichment
  26. 2026-06-25 16:45 UTCEG score recompute
  27. 2026-06-25 16:45 UTCGHSA enrichment
  28. 2026-06-25 13:50 UTCEPSS rescore
  29. 2026-06-25 12:32 UTCEG score recompute
  30. 2026-06-25 12:32 UTCGHSA enrichment
  31. 2026-06-24 14:05 UTCEPSS rescore
  32. 2026-06-23 21:33 UTCEPSS rescore
  33. 2026-06-22 14:25 UTCEPSS rescore
  34. 2026-06-21 14:56 UTCEPSS rescore
  35. 2026-06-21 01:59 UTCEPSS rescore
  36. 2026-06-19 19:26 UTCEPSS rescore
  37. 2026-06-18 17:52 UTCEPSS rescore
  38. 2026-06-18 03:42 UTCEG score recompute
  39. 2026-06-18 03:41 UTCGHSA enrichment
  40. 2026-06-17 23:39 UTCEG score recompute
  41. 2026-06-17 23:39 UTCGHSA enrichment
  42. 2026-06-17 19:26 UTCEG score recompute
  43. 2026-06-17 19:26 UTCGHSA enrichment
  44. 2026-06-17 17:53 UTCEPSS rescore
  45. 2026-06-17 13:56 UTCEG score recompute
  46. 2026-06-17 13:56 UTCGHSA enrichment
  47. 2026-06-17 09:58 UTCEG score recompute
  48. 2026-06-17 09:58 UTCGHSA enrichment
  49. 2026-06-17 05:19 UTCEG score recompute
  50. 2026-06-17 05:19 UTCGHSA enrichment
  51. 2026-06-17 01:22 UTCEG score recompute
  52. 2026-06-17 01:22 UTCGHSA enrichment
  53. 2026-06-16 21:25 UTCEG score recompute
  54. 2026-06-16 21:25 UTCGHSA enrichment
  55. 2026-06-16 17:53 UTCEPSS rescore
  56. 2026-06-16 17:28 UTCEG score recompute
  57. 2026-06-16 17:28 UTCGHSA enrichment
  58. 2026-06-16 10:24 UTCEG score recompute
  59. 2026-06-16 10:24 UTCGHSA enrichment
  60. 2026-06-16 06:28 UTCEG score recompute
  61. 2026-06-16 06:28 UTCGHSA enrichment
  62. 2026-06-16 02:30 UTCEG score recompute
  63. 2026-06-16 02:30 UTCGHSA enrichment
  64. 2026-06-15 22:33 UTCEG score recompute
  65. 2026-06-15 22:33 UTCGHSA enrichment
  66. 2026-06-15 17:49 UTCEPSS rescore
  67. 2026-06-15 13:58 UTCEG score recompute
  68. 2026-06-15 13:58 UTCGHSA enrichment
  69. 2026-06-15 05:05 UTCEG score recompute
  70. 2026-06-15 05:05 UTCGHSA enrichment
  71. 2026-06-15 01:08 UTCEG score recompute
  72. 2026-06-15 01:08 UTCGHSA enrichment
  73. 2026-06-14 23:18 UTCEPSS rescore
  74. 2026-06-14 21:11 UTCEG score recompute
  75. 2026-06-14 21:11 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-9543?
CVE-2026-9543 is a critical vulnerability published on May 26, 2026. A vulnerability has been found in Totolink N300RH 6.1c.1353_B20190305. Affected is the function setPasswordCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Such manipulation of the argument admpass leads to os command injection. The attack can be executed remotely.…
When was CVE-2026-9543 disclosed?
CVE-2026-9543 was first published in the National Vulnerability Database on May 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9543 actively exploited?
CVE-2026-9543 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 79.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-9543?
CVE-2026-9543 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-9543?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9543, 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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