{"id":"CVE-2025-66834","title":"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.","summary":"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.","severity":"high","cvss":7.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","cwe":["CWE-1236"],"vendor":"trueconf","product":"trueconf_server","affected":["trueconf_server = 5.5.2.10813"],"published":"2025-12-30","updated":"2026-08-20","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-66834","references":[{"url":"https://github.com/x00nullbit/CVE-References/blob/main/CVE-2025-66834/README.md","label":"cve@mitre.org"},{"url":"https://trueconf.com","label":"cve@mitre.org"},{"url":"https://github.com/x00nullbit/CVE-References/blob/main/CVE-2025-66834/README.md","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd"],"epss":0.00305,"epssPercentile":0.23352,"ingestedAt":"2026-08-20T18:59:51.541Z","slug":"CVE-2025-66834","body":"## Overview\n\nA 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.\n\n## Affected\n\n- `trueconf_server = 5.5.2.10813`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":40,"depthScoreParts":{"impact":40.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}