CVE-2026-72529

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2026-08-20), indicating real-world exploitation has been confirmed by US federal agencies. A secondary CVSS source baseline 9.8 retained for reference (NVD's own analysis pending). Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, secondary
Trending — 3 sources updated this weekExploited in the wild
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 1.5%CVSS: 9.8Exploit: cisa kev · ssvc activeExposed services: Not assessed

A fix is available — apply it.

A remote unauthorized attacker with network access via port 4307/TCP to the TrueConf server versions 5.3.X to 5.3.9, 5.4.X to 5.4.9, 5.5.X to 5.5.5, and earlier could execute an arbitrary script by calling an undocumented function.

CVSS v3
9.8
EG Score
9.8CRITICALhigh confidence
EG Risk
99
EG Risk 99/100CISA SSVC

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%
Exploitation100% × 40%
Automatability100% × 15%
CISA SSVC: Attend at low mission impact; Act at medium or high.
Action: A fix is available. Apply it sooner than your standard update timelines at low mission impact and as soon as possible at medium or high.
EPSS PROB
1.5%
EPSS %ILE
72nd
KEV
⚠ Exploited

CISA SSVCAttend at low mission impact; Act at medium or high.

A fix is available. Apply it sooner than your standard update timelines at low mission impact and as soon as possible at medium or high.

Exploitation active (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 19, 2026

Last Modified

August 21, 2026

Advisory Details (3)

Auto-updated Oct 2, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-72529
generic

Head Mare delivers PhantomCore and PhantomGraph backdoors via an unpatched TrueConf server | Securelist

https://securelist.com/tr/head-mare-targets-trueconf-server-with-phantomcore/120988/
generic

KLCERT-26-057: TrueConf Server. Missing authentication for critical function | Kaspersky ICS CERT EN

https://ics-cert.kaspersky.com/advisories/2026/08/11/trueconf-server-missing-authentication-for-critical-function/

Vendor Advisories for CVE-2026-72529(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 53× in last 7d / 240× 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 394 total refreshes for this CVE.

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

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Frequently asked(6)

What is CVE-2026-72529?
CVE-2026-72529 is a critical vulnerability published on August 19, 2026. A remote unauthorized attacker with network access via port 4307/TCP to the TrueConf server versions 5.3.X to 5.3.9, 5.4.X to 5.4.9, 5.5.X to 5.5.5, and earlier could execute an arbitrary script by calling an undocumented function.
When was CVE-2026-72529 disclosed?
CVE-2026-72529 was first published on August 19, 2026, with the most recent update on August 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72529 actively exploited?
Yes. CISA added CVE-2026-72529 to the Known Exploited Vulnerabilities catalog on August 20, 2026, affecting TrueConf Server. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate attention. A fix is available. Apply it.
What is the CVSS score of CVE-2026-72529?
CVE-2026-72529 has a CVSS base score of 9.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
Which products are affected by CVE-2026-72529?
CVE-2026-72529 affects TrueConf Server.
How do I remediate CVE-2026-72529?
A fix for CVE-2026-72529 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-72529 are linked in the Vendor Advisories panel on this page.

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