SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAwaiting Analysis

CVE-2026-83845

Improper privilege management in Windows Internet (wininet.dll) allows an authorized attacker to perform spoofing locally.

HIGH 8.4EPSS 0.33%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.33%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Improper privilege management in Windows Internet (wininet.dll) allows an authorized attacker to perform spoofing locally.

CVSS 3.1
8.4 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
EPSS
0.33% probability · 26th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-290
Source
secure@microsoft.com
EPSS trend
0%3%5%14 October 2026: 0.29%27 October 2026: 0.33%14 October 202627 October 2026

EPSS moved from 0.3% on 14 October 2026 to 0.3% on 27 October 2026.

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