---
title: "CVE-2026-79298: Howyar Technologies Inc SysReturn - Remote Code Execution"
description: "Howyar Technologies Inc SysReturn < 11.3.034 contains a local code execution vulnerability caused by crafted cloak32.dat file on the ESP affecting BOOTia32.efi, letting local attackers execute arbitrary code."
url: https://panop.io/threat-heartbeat/CVE-2026-79298/
---

# CVE-2026-79298 Howyar Technologies Inc SysReturn - Remote Code Execution

Howyar Technologies Inc SysReturn < 11.3.034 contains a local code execution vulnerability caused by crafted cloak32.dat file on the ESP affecting BOOTia32.efi, letting local attackers execute arbitrary code.

CVSS base score 8.4 /10

High

CISA KEV

Not listed

Public exploit

Proof of concept available

Authentication

Not required

EPSS

0.19% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-79298)

## Details

Type

Remote Code Execution

Impact

Remote Code Execution

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Published

16 September 2026

Updated

15 October 2026

Weakness

[CWE-693](https://cwe.mitre.org/data/definitions/693.html)

## Vendor fix

Update to version 11.3.034 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-79298](https://nvd.nist.gov/vuln/detail/CVE-2026-79298)
- [https://github.com/TheMalwareGuardian/CVE-2026-79298](https://github.com/TheMalwareGuardian/CVE-2026-79298)
- [https://github.com/TheMalwareGuardian/UEFI-Security-Research-Howyar-SysReturn-NetCopy](https://github.com/TheMalwareGuardian/UEFI-Security-Research-Howyar-SysReturn-NetCopy)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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