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 — KEV-added 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: 0%CVSS: 9.8Exploit: cisa kev · ssvc activeExposed: 0

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

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
9.8(high)
EG Risk
99(Act)
EG Risk 99/100SSVC: Act

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%
Action: Fix now — active exploitation, automatable, high impact.
EPSS PROB
0%
EPSS %ILE
21%
KEV
⚠ Exploited

Published

August 19, 2026

Last Modified

August 21, 2026

Advisory Details (3)

Auto-updated Aug 21, 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 28× in last 7d / 28× 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.

  1. 2026-08-21 04:35 UTCEG score recompute
  2. 2026-08-21 04:35 UTCGHSA enrichment
  3. 2026-08-21 04:00 UTCEG score recompute
  4. 2026-08-21 04:00 UTCGHSA enrichment
  5. 2026-08-21 03:26 UTCGHSA enrichment
  6. 2026-08-20 23:21 UTCEG score recompute
  7. 2026-08-20 23:21 UTCGHSA enrichment
  8. 2026-08-20 22:56 UTCEPSS rescore
  9. 2026-08-20 19:18 UTCGHSA enrichment
  10. 2026-08-20 18:17 UTCEG score recompute
  11. 2026-08-20 18:17 UTCGHSA enrichment
  12. 2026-08-20 17:56 UTCEG score recompute
  13. 2026-08-20 17:56 UTCGHSA enrichment
  14. 2026-08-20 17:06 UTCCISA KEV update
  15. 2026-08-20 16:46 UTCGHSA enrichment
  16. 2026-08-20 12:27 UTCGHSA enrichment
  17. 2026-08-20 08:23 UTCGHSA enrichment
  18. 2026-08-20 04:19 UTCEG score recompute
  19. 2026-08-20 04:19 UTCGHSA enrichment
  20. 2026-08-20 04:08 UTCEG score recompute
  21. 2026-08-20 04:08 UTCGHSA enrichment
  22. 2026-08-20 02:40 UTCGHSA enrichment
  23. 2026-08-19 22:33 UTCEG score recompute
  24. 2026-08-19 22:33 UTCGHSA enrichment
  25. 2026-08-19 18:29 UTCEG score recompute
Show 3 more
  1. 2026-08-19 17:28 UTCEG score recompute
  2. 2026-08-19 17:07 UTCEG score recompute
  3. 2026-08-19 17:06 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

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 in the National Vulnerability Database 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 patching attention.
What is the CVSS score of CVE-2026-72529?
CVE-2026-72529 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2026-72529?
CVE-2026-72529 affects TrueConf Server. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2026-72529?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-72529, 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.

Dependency Blast Radius

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