CVE-2026-64827

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-03. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
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: Elevated riskExposed: 0

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

Telenia Software TVox 26.5.3 and prior 26.x versions, and 24.9.21 and prior 24.x versions, contain an authentication bypass vulnerability in set_env.php where the redirectToLoginAdminIRequestHaveAccessToken() function derives the current page name from PHP_SELF and skips authentication when the value matches 'login_admin.php'. Attackers can append '/login_admin.php' to the path of any target PHP script to cause the authentication check to pass and gain unauthenticated access to all PHP scripts under the manager HTML directory.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
75(Attend)
EG Risk 75/100SSVC: Attend

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%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

August 3, 2026

Last Modified

August 7, 2026

Advisory Details (4)

Auto-updated Aug 14, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Full Disclosure: [KIS-2026-14] Telenia Software TVox <= 26.5.3 (set_env.php) Authentication Bypass Vulnerability

http://seclists.org/fulldisclosure/2026/Aug/30
generic

Telenia TVox 26.5.3 Authentication Bypass via set_env.php | Advisories | VulnCheck

https://www.vulncheck.com/advisories/telenia-tvox-authentication-bypass-via-set-env-php
generic

TVox Telenia Software Customer Care - Telenia Software

https://www.teleniasoftware.com/
generic🟡 PoC Available

Telenia Software TVox <= 26.5.3 (set_env.php) Authentication Bypass Vulnerability | Karma(In)Security

https://karmainsecurity.com/KIS-2026-14

Vendor Advisories for CVE-2026-64827(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 51× in last 7d / 130× 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. 2026-08-20 17:03 UTCGHSA enrichment
  2. 2026-08-20 12:38 UTCGHSA enrichment
  3. 2026-08-20 08:14 UTCGHSA enrichment
  4. 2026-08-20 03:50 UTCGHSA enrichment
  5. 2026-08-19 23:24 UTCGHSA enrichment
  6. 2026-08-19 19:00 UTCEG score recompute
  7. 2026-08-19 19:00 UTCGHSA enrichment
  8. 2026-08-19 17:04 UTCEPSS rescore
  9. 2026-08-19 14:05 UTCGHSA enrichment
  10. 2026-08-19 09:42 UTCGHSA enrichment
  11. 2026-08-19 05:10 UTCGHSA enrichment
  12. 2026-08-19 00:45 UTCGHSA enrichment
  13. 2026-08-18 20:21 UTCGHSA enrichment
  14. 2026-08-18 15:49 UTCEG score recompute
  15. 2026-08-18 15:49 UTCGHSA enrichment
  16. 2026-08-18 13:48 UTCEPSS rescore
  17. 2026-08-18 11:15 UTCGHSA enrichment
  18. 2026-08-18 06:50 UTCGHSA enrichment
  19. 2026-08-18 02:24 UTCGHSA enrichment
  20. 2026-08-17 21:55 UTCGHSA enrichment
  21. 2026-08-17 17:31 UTCEG score recompute
  22. 2026-08-17 17:31 UTCGHSA enrichment
  23. 2026-08-17 13:47 UTCEPSS rescore
  24. 2026-08-17 13:07 UTCGHSA enrichment
  25. 2026-08-17 08:43 UTCGHSA enrichment
Show 75 more
  1. 2026-08-17 04:20 UTCGHSA enrichment
  2. 2026-08-16 23:56 UTCGHSA enrichment
  3. 2026-08-16 19:32 UTCGHSA enrichment
  4. 2026-08-16 15:08 UTCEG score recompute
  5. 2026-08-16 15:08 UTCGHSA enrichment
  6. 2026-08-16 14:56 UTCEPSS rescore
  7. 2026-08-16 10:44 UTCGHSA enrichment
  8. 2026-08-16 06:20 UTCEG score recompute
  9. 2026-08-16 06:20 UTCGHSA enrichment
  10. 2026-08-16 01:57 UTCGHSA enrichment
  11. 2026-08-15 21:33 UTCGHSA enrichment
  12. 2026-08-15 17:09 UTCGHSA enrichment
  13. 2026-08-15 12:45 UTCGHSA enrichment
  14. 2026-08-15 08:15 UTCGHSA enrichment
  15. 2026-08-15 03:51 UTCEG score recompute
  16. 2026-08-15 03:51 UTCGHSA enrichment
  17. 2026-08-15 01:30 UTCEPSS rescore
  18. 2026-08-14 23:27 UTCGHSA enrichment
  19. 2026-08-14 19:03 UTCGHSA enrichment
  20. 2026-08-14 14:40 UTCGHSA enrichment
  21. 2026-08-14 10:16 UTCGHSA enrichment
  22. 2026-08-14 05:53 UTCGHSA enrichment
  23. 2026-08-14 01:29 UTCEG score recompute
  24. 2026-08-14 01:29 UTCGHSA enrichment
  25. 2026-08-13 22:00 UTCEPSS rescore
  26. 2026-08-13 21:05 UTCGHSA enrichment
  27. 2026-08-13 16:41 UTCGHSA enrichment
  28. 2026-08-13 11:56 UTCGHSA enrichment
  29. 2026-08-13 07:33 UTCGHSA enrichment
  30. 2026-08-13 03:08 UTCGHSA enrichment
  31. 2026-08-12 22:44 UTCGHSA enrichment
  32. 2026-08-12 18:20 UTCGHSA enrichment
  33. 2026-08-12 13:57 UTCEG score recompute
  34. 2026-08-12 13:57 UTCGHSA enrichment
  35. 2026-08-12 13:51 UTCEPSS rescore
  36. 2026-08-12 09:33 UTCGHSA enrichment
  37. 2026-08-12 05:09 UTCGHSA enrichment
  38. 2026-08-12 00:45 UTCGHSA enrichment
  39. 2026-08-11 20:21 UTCGHSA enrichment
  40. 2026-08-11 15:57 UTCEG score recompute
  41. 2026-08-11 15:57 UTCGHSA enrichment
  42. 2026-08-11 11:33 UTCGHSA enrichment
  43. 2026-08-11 07:09 UTCGHSA enrichment
  44. 2026-08-11 02:45 UTCEG score recompute
  45. 2026-08-11 02:45 UTCGHSA enrichment
  46. 2026-08-11 00:00 UTCEPSS rescore
  47. 2026-08-10 22:22 UTCGHSA enrichment
  48. 2026-08-10 17:58 UTCGHSA enrichment
  49. 2026-08-10 13:31 UTCGHSA enrichment
  50. 2026-08-10 09:07 UTCGHSA enrichment
  51. 2026-08-10 04:43 UTCGHSA enrichment
  52. 2026-08-10 00:19 UTCGHSA enrichment
  53. 2026-08-09 19:55 UTCGHSA enrichment
  54. 2026-08-09 15:31 UTCEG score recompute
  55. 2026-08-09 15:31 UTCGHSA enrichment
  56. 2026-08-09 13:47 UTCEPSS rescore
  57. 2026-08-09 11:08 UTCGHSA enrichment
  58. 2026-08-09 06:43 UTCGHSA enrichment
  59. 2026-08-09 02:20 UTCGHSA enrichment
  60. 2026-08-08 21:56 UTCGHSA enrichment
  61. 2026-08-08 17:32 UTCEG score recompute
  62. 2026-08-08 17:32 UTCGHSA enrichment
  63. 2026-08-08 16:37 UTCEPSS rescore
  64. 2026-08-08 13:08 UTCGHSA enrichment
  65. 2026-08-08 08:44 UTCGHSA enrichment
  66. 2026-08-08 04:20 UTCGHSA enrichment
  67. 2026-08-07 23:56 UTCGHSA enrichment
  68. 2026-08-07 19:32 UTCEG score recompute
  69. 2026-08-07 19:32 UTCGHSA enrichment
  70. 2026-08-07 15:08 UTCGHSA enrichment
  71. 2026-08-07 10:44 UTCGHSA enrichment
  72. 2026-08-07 06:20 UTCEG score recompute
  73. 2026-08-07 06:20 UTCGHSA enrichment
  74. 2026-08-07 05:38 UTCEG score recompute
  75. 2026-08-07 05:38 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-64827?
CVE-2026-64827 is a critical vulnerability published on August 3, 2026. Telenia Software TVox 26.5.3 and prior 26.x versions, and 24.9.21 and prior 24.x versions, contain an authentication bypass vulnerability in setenv.php where the redirectToLoginAdminIRequestHaveAccessToken() function derives the current page name from PHPSELF and skips authentication when the value…
When was CVE-2026-64827 disclosed?
CVE-2026-64827 was first published in the National Vulnerability Database on August 3, 2026, with the most recent update on August 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64827 actively exploited?
CVE-2026-64827 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 63.6% of all scored CVEs.
What is the CVSS score of CVE-2026-64827?
CVE-2026-64827 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-64827?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64827, 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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