CVE-2026-72530

Published Aug 19, 2026

Last updated 23 days ago

Exploit known CVSS critical 9.5

Docker

Zero-day

Supply chain

Server

TrueConf Server

Overview

AI description

Automated description summarized from trusted sources.

CVE-2026-72530 is a code injection vulnerability affecting 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. This flaw allows a remote, unauthorized attacker with network access via port 4307/TCP to utilize a specially crafted script. The vulnerability enables the attacker to break out of the isolated environment within the TrueConf server and subsequently execute arbitrary code on the host system. This CVE is often discussed in conjunction with CVE-2026-72529, which is a missing authentication vulnerability that can allow an unauthenticated remote attacker to execute an arbitrary script. CISA has added CVE-2026-72530 to its Known Exploited Vulnerabilities catalog, indicating evidence of active exploitation.

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.
Source: vulnerability@kaspersky.com
NVD status: Analyzed
Products: trueconf_server

Risk scores

CVSS 4.0

Type: Secondary
Base score: 9.5
Impact score: -
Exploitability score: -
Vector string: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Severity: CRITICAL

CVSS 3.1

Type: Secondary
Base score: 9
Impact score: 6
Exploitability score: 2.2
Vector string: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Severity: CRITICAL

Known exploits

Data from CISA

Vulnerability name: TrueConf Server Code Injection Vulnerability
Exploit added on: Aug 20, 2026
Exploit action due: Sep 3, 2026
Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Weaknesses

vulnerability@kaspersky.com: CWE-94

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:trueconf:trueconf_server:*:*:*:*:*:windows:*:*",
            "matchCriteriaId": "223F39D3-6C0B-449C-BBC4-22E9FD1069B0",
            "versionEndExcluding": "5.3.9.10013",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:trueconf:trueconf_server:*:*:*:*:*:linux_kernel:*:*",
            "matchCriteriaId": "651E4015-13F5-467A-B994-8CD8CF096F2B",
            "versionEndExcluding": "5.3.9.10015",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:trueconf:trueconf_server:*:*:*:*:*:windows:*:*",
            "matchCriteriaId": "92B109B3-71FC-46C8-9790-602F6E82A1B4",
            "versionEndExcluding": "5.4.9.10072",
            "versionStartIncluding": "5.4.0.12689",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:trueconf:trueconf_server:*:*:*:*:*:linux_kernel:*:*",
            "matchCriteriaId": "991CB573-4063-4F9F-980C-73049E0D86BF",
            "versionEndExcluding": "5.4.9.10019",
            "versionStartIncluding": "5.4.0.12700",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:trueconf:trueconf_server:*:*:*:*:*:windows:*:*",
            "matchCriteriaId": "BA7EE78E-8CC5-4F6E-8BE2-485C61334D3C",
            "versionEndExcluding": "5.5.5.10010",
            "versionStartIncluding": "5.5.0.13826",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:trueconf:trueconf_server:*:*:*:*:*:linux_kernel:*:*",
            "matchCriteriaId": "1B3BF976-3656-4152-A255-ABA311510C7C",
            "versionEndExcluding": "5.5.5.10009",
            "versionStartIncluding": "5.5.0.13828",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  }
]

References

Sources include official advisories and independent security research.