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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.003 (21.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 21.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Trueconf Server — versions 5.5.2.10813
- Trueconf Server — versions 5.5.2.10813
Weakness classification (CWE)
References
- trueconf.com (Product)
- github.com/x00nullbit/CVE-References/blob/main/CVE-2025-66834/README.md (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.