CVE-2025-66834

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-66834
A CSV Formula Injection vulnerability in TrueConf Server v5.5.2.10813 allows a normal user to inject malicious spreadsheet formulas into exported chat logs via crafted Display Name.

7.3 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.1 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/x00nullbit/CVE-References/blob/main/CVE-2025-66834/README.md Exploit Third Party Advisory
https://trueconf.com Product
https://github.com/x00nullbit/CVE-References/blob/main/CVE-2025-66834/README.md Exploit Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:trueconf:server:5.5.2.10813:*:*:*:*:*:*:*
History

07 Jan 2026, 15:39

Type Values Removed Values Added
First Time Trueconf
Trueconf server
CPE cpe:2.3:a:trueconf:server:5.5.2.10813:*:*:*:*:*:*:*
References () https://github.com/x00nullbit/CVE-References/blob/main/CVE-2025-66834/README.md - () https://github.com/x00nullbit/CVE-References/blob/main/CVE-2025-66834/README.md - Exploit, Third Party Advisory
References () https://trueconf.com - () https://trueconf.com - Product

02 Jan 2026, 15:16

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.3
References () https://github.com/x00nullbit/CVE-References/blob/main/CVE-2025-66834/README.md - () https://github.com/x00nullbit/CVE-References/blob/main/CVE-2025-66834/README.md -
CWE CWE-1236

30 Dec 2025, 19:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-12-30 19:15

Updated : 2026-01-07 15:39

NVD link : CVE-2025-66834

Mitre link : CVE-2025-66834

CVE.ORG link : CVE-2025-66834

JSON object : View

Products Affected

trueconf

  • server
CWE
CWE-1236

Improper Neutralization of Formula Elements in a CSV File