High 8.8Published Jan 27, 2026

CVE-2020-36938WinAVR Version 20100110 - Insecure Folder Permissions

Updated under an hour ago (Oct 27, 2026, 6:40 AM ET)

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It affects WinAVR. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for WinAVR

Exploited in the last 30 days

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 (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-732
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Jan 27, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

WinAVR WinAVR winavr:winavr (from the name)	20100110	CNA record

References

References

https://www.exploit-db.com/exploits/49379	exploit
https://sourceforge.net/projects/winavr/	product
https://www.vulncheck.com/advisories/winavr-version-insecure-folder-permissions	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.