SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2016-3236

The Web Proxy Auto Discovery (WPAD) protocol implementation in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 mishandles proxy…

CRITICAL 9.8EPSS 75.6%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 75.6%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.

Description

The Web Proxy Auto Discovery (WPAD) protocol implementation in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 mishandles proxy discovery, which allows remote attackers to redirect network traffic via unspecified vectors, aka "Windows WPAD Proxy Discovery Elevation of Privilege Vulnerability."

CVSS 3.0
9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
75.61% probability · 100th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-19
Affected
microsoft/windows 10 · microsoft/windows 7 · microsoft/windows 8.1 · microsoft/windows rt 8.1 · microsoft/windows server 2008 · microsoft/windows server 2012 · microsoft/windows vista
Source
secure@microsoft.com
EPSS trend
0%40%80%21 September 2026: 74.97%22 September 2026: 76.77%31 October 2026: 75.61%4 November 2026: 75.61%21 September 20264 November 2026

EPSS moved from 75.0% on 21 September 2026 to 75.6% on 4 November 2026, peaking at 76.8% on 22 September 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

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