CVE-2025-66834 — HIGH (7.3)

Vulnerability Description

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.

CVSS Score

7.3

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

NONE

Affected Products

Vendor	Product	Versions
Trueconf	Server	5.5.2.10813

Related Weaknesses (CWE)

CWE-1236

References

https://github.com/x00nullbit/CVE-References/blob/main/CVE-2025-66834/README.mdExploitThird Party Advisory
https://trueconf.comProduct
https://github.com/x00nullbit/CVE-References/blob/main/CVE-2025-66834/README.mdExploitThird Party Advisory

FAQ

What is CVE-2025-66834?

CVE-2025-66834 is a vulnerability with a CVSS score of 7.3 (HIGH). 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.

How severe is CVE-2025-66834?

CVE-2025-66834 has been rated HIGH with a CVSS base score of 7.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-66834?

Check the references section above for vendor advisories and patch information. Affected products include: Trueconf Server.