SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2016-3352

Microsoft Windows 8.1, Windows RT 8.1, and Windows 10 Gold, 1511, and 1607 do not properly check NTLM SSO requests for MSA logins, which makes it easier for remote attackers to determine passwords via a brute-force attack on NTLM password hashes, aka…

HIGH 8.8EPSS 20.8%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 20.8%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.

Description

Microsoft Windows 8.1, Windows RT 8.1, and Windows 10 Gold, 1511, and 1607 do not properly check NTLM SSO requests for MSA logins, which makes it easier for remote attackers to determine passwords via a brute-force attack on NTLM password hashes, aka "Microsoft Information Disclosure Vulnerability."

CVSS 3.0
8.8 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
20.79% probability · 98th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-285
Affected
microsoft/windows 10 · microsoft/windows 8.1 · microsoft/windows rt 8.1
Source
secure@microsoft.com
EPSS trend
0%13%25%21 September 2026: 16.76%22 September 2026: 20.79%4 November 2026: 20.79%21 September 20264 November 2026

EPSS moved from 16.8% on 21 September 2026 to 20.8% on 4 November 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.