CVE-2020-36938

7.0 highEPSS 0.2%

High (7.0). EPSS 0.2% chance of exploitation in the next 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.

Severity

CVSS 4.0

7.0 high

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

8.8 high

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

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 14% of CVEs (scores of 2026-10-31)
CWE: CWE-732
Published: 2026-01-27
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

References

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

Check your stack JSON