CVE-2026-72530
Act now ● On CISA KEV — actively exploited
Actively exploited — on the CISA KEV list.
CVSS base
9.0
CRITICAL
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
1.8%
77.8th percentile
CISA KEV
Listed
Added 2026-08-20 · patch by 2026-09-03
Weakness / dates
CWE-94
Published 2026-08-19 · modified 2026-08-21
CVSS breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
| Attack Vector | N | Network |
| Attack Complexity | H | High |
| Privileges Required | N | None |
| User Interaction | N | None |
| Scope | C | Changed |
| Confidentiality | H | High |
| Integrity | H | High |
| Availability | H | High |
Timeline
- 2026-08-19 — Published (NVD)
- 2026-08-20 — Added to CISA KEV (actively exploited)
- 2026-09-03 — CISA patch-by deadline
- 2026-08-21 — Last modified (NVD)
Description
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 use a specially crafted script to break out of the isolated environment and execute arbitrary code on the host system.