CVE-2026-9139

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-20. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0

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

Taiko AG1000-01A SMS Alert Gateway Rev 7.3 and Rev 8 contains a hard-coded credential vulnerability in the embedded web configuration interface where authentication is implemented entirely in client-side JavaScript in login.zhtml, exposing static plaintext credentials in the page source. Unauthenticated attackers with network access can recover administrative credentials directly from the client-side validate() function to obtain full administrative access to the device.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: Track

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%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
39%
KEV
Not listed

Published

May 20, 2026

Last Modified

July 28, 2026

Advisory Details (1)

Auto-updated Sep 15, 2026
No patch confirmed yet.
generic

Taiko AG1000-01A Rev 7.3/8 Hard-coded Credentials via login.zhtml | Advisories | VulnCheck

https://www.vulncheck.com/advisories/taiko-ag1000-01a-rev-8-hard-coded-credentials-via-login-zhtml

Vendor Advisories for CVE-2026-9139(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 29× 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 319 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-9139?
CVE-2026-9139 is a critical vulnerability published on May 20, 2026. Taiko AG1000-01A SMS Alert Gateway Rev 7.3 and Rev 8 contains a hard-coded credential vulnerability in the embedded web configuration interface where authentication is implemented entirely in client-side JavaScript in login.zhtml, exposing static plaintext credentials in the page source.…
When was CVE-2026-9139 disclosed?
CVE-2026-9139 was first published in the National Vulnerability Database on May 20, 2026, with the most recent update on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9139 actively exploited?
CVE-2026-9139 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 61.3% of all scored CVEs.
What is the CVSS score of CVE-2026-9139?
CVE-2026-9139 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-9139?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9139, 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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