{"cve":"CVE-2020-15843","nvd":{"published":"2020-09-24T23:15:13.900","modified":"2026-06-17T02:57:17.353","status":"Modified","description":"ActFax Version 7.10 Build 0335 (2020-05-25) is susceptible to a privilege escalation vulnerability due to insecure folder permissions on %PROGRAMFILES%\\ActiveFax\\Client\\, %PROGRAMFILES%\\ActiveFax\\Install\\ and %PROGRAMFILES%\\ActiveFax\\Terminal\\. The folder permissions allow \"Full Control\" to \"Everyone\". An authenticated local attacker can exploit this to replace the TSClientB.exe binary in the Terminal directory, which is executed on logon for every user. Alternatively, the attacker can replace any of the binaries in the Client or Install directories. The latter requires additional user interaction, for example starting the client.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","score":7.3},"cwes":["CWE-276"],"references":["https://blog.to.com/advisory-actfax-7-10-build-0335-privilege-escalation-cve-2020-15843/","https://blog.to.com/advisory-actfax-7-10-build-0335-privilege-escalation-cve-2020-15843/"],"products":["actfax:actfax"],"source":"nvd","synced_at":"2026-10-19T21:09:53.489947993+00:00"},"epss":{"cve":"CVE-2020-15843","score":0.00398,"percentile":0.34081,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}