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UK Cyber Defence
VulnerabilityAwaiting Analysis

CVE-2026-83683

Absolute path traversal in Windows Encrypting File System (EFS) allows an authorized attacker to disclose information over a network.

MEDIUM 6.5EPSS 1.28%

Does this matter?

Lower severity and a low EPSS score (1.28%). Track it; it rarely justifies an emergency change on its own.

Description

Absolute path traversal in Windows Encrypting File System (EFS) allows an authorized attacker to disclose information over a network.

CVSS 3.1
6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS
1.28% probability · 70th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-36
Source
secure@microsoft.com
EPSS trend
0%3%5%14 October 2026: 1.13%26 October 2026: 1.28%14 October 202626 October 2026

EPSS moved from 1.1% on 14 October 2026 to 1.3% on 26 October 2026.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.