Proxifier for Mac before 2.19.2, when first run, allows local users to gain privileges by replacing the KLoader binary with a Trojan horse…

published 2017-04-14 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-16666

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.0%; EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits: 1; Exploit-DB

Proxifier for Mac before 2.19.2, when first run, allows local users to gain privileges by replacing the KLoader binary with a Trojan horse program.

Patch / fix

fixed in 1

proxifier proxifier 2.19.2

Timeline

2017-04-14 Published
2017-12-06 First public exploit (EDB-43225)

Exploit prediction

0.99% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

EDB-43225 Proxifier for Mac 2.19 - Local Privilege Escalation local, 2017-12-06
m4.rkw.io https://m4.rkw.io/blog/cve20177690-local-root-privesc-in-proxifier-for-mac-219.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.2	AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness

CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

exploit-db.com /exploits/43225/
exploit, third-party-advisory, vdb-entry
m4.rkw.io /blog/cve20177690-local-root-privesc-in-proxifier-for-mac-219.html
exploit, third-party-advisory

Sources

CVE List CVE-2017-7690
NVD CVE-2017-7690

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary