Vulnerability in Gfi Usa, Llc Kerioconnect
CVE-2026-112357
GFI KerioConnect (Kerio Connect) Outlook Connector (Offline Edition), 'KOFF', before 10.0.9 Patch 2 contains a local privilege escalation vulnerability caused by weak installer permissions that leave the product directory writable by the built-in Users group. A local non-administrative attacker can replace the searchd.exe service binary used by the bundled KOFFIndexingService, which runs as LocalSystem, to execute arbitrary code with NT AUTHORITY\SYSTEM privileges upon the next service start or reboot.
Published .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- gfi.ai/resource/kerioconnect-product-releases/ (release-notes, patch)
- www.vulncheck.com/advisories/gfi-kerioconnect-koff-9p2-privilege-escalation (third-party-advisory)
Frequently asked questions
- What is CVE-2026-112357?
- CVE-2026-112357 is a high-severity vulnerability in Gfi Usa, Llc Kerioconnect, classified under Incorrect Default Permissions. CVSS score: 7.8/10. Published 2026-10-28.
- How severe is CVE-2026-112357?
- High severity. CVSS v3 base score is 7.8 out of 10.