What is CVE-2025-66834?

CVE-2025-66834 is a high-severity vulnerability in Trueconf Server, classified under Improper Neutralization of Formula Elements in a CSV File. CVSS score: 7.3/10. Published 2025-12-30.

How severe is CVE-2025-66834?

High severity. CVSS v3 base score is 7.3 out of 10.

Vulnerability in Trueconf Server

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.

EPSS: 0.003 (17.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N.

Affected products

Trueconf Server — versions 5.5.2.10813
N/a — versions n/a

Weakness classification (CWE)

CWE-1236 — Improper Neutralization of Formula Elements in a CSV File

References

cve@mitre.org (Product)
cve@mitre.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-66834?: CVE-2025-66834 is a high-severity vulnerability in Trueconf Server, classified under Improper Neutralization of Formula Elements in a CSV File. CVSS score: 7.3/10. Published 2025-12-30.
How severe is CVE-2025-66834?: High severity. CVSS v3 base score is 7.3 out of 10.