CVE-2020-36938

HIGH
2026-01-27 [email protected]
8.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
PoC Detected
Jan 29, 2026 - 16:31 vuln.today
Public exploit code
CVE Published
Jan 27, 2026 - 16:16 nvd
HIGH 8.8

Tags

Privilege Escalation

Description

WinAVR version 20100110 contains an insecure permissions vulnerability that allows authenticated users to modify system files and executables. Attackers can leverage the overly permissive access controls to potentially modify critical DLLs and executable files in the WinAVR installation directory.

Analysis

WinAVR version 20100110 contains an insecure permissions vulnerability that allows authenticated users to modify system files and executables. Attackers can leverage the overly permissive access controls to potentially modify critical DLLs and executable files in the WinAVR installation directory. [CVSS 8.8 HIGH]

Technical Context

This vulnerability (CWE-732: Incorrect Permission Assignment for Critical Resource) WinAVR version 20100110 contains an insecure permissions vulnerability that allows authenticated users to modify system files and executables. Attackers can leverage the overly permissive access controls to potentially modify critical DLLs and executable files in the WinAVR installation directory.

Affected Products

WinAVR version 20100110 contains an insecure permissions vulnerability that

Remediation

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

Priority Score

64
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +44
POC: +20

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CVE-2020-36938 vulnerability details – vuln.today
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