VulnerabilityModified

CVE-2017-0271

MEDIUM 5.9EPSS 13.3%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 13.3%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.

Description

Microsoft Server Message Block 1.0 (SMBv1) allows an information disclosure vulnerability in the way that Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 handles certain requests, aka "Windows SMB Information Disclosure Vulnerability". This CVE ID is unique from CVE-2017-0267, CVE-2017-0268, CVE-2017-0270, CVE-2017-0274, CVE-2017-0275, and CVE-2017-0276.

CVSS 3.0: 5.9 MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS: 13.27% probability · 96th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-200
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 server 2016
Source: secure@microsoft.com

EPSS trend

EPSS moved from 11.2% on 21 September 2026 to 13.3% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

References

http://www.securityfocus.com/bid/98265Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038432
https://ics-cert.us-cert.gov/advisories/ICSMA-18-058-02
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0271Patch, Vendor Advisory
http://www.securityfocus.com/bid/98265Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038432
https://ics-cert.us-cert.gov/advisories/ICSMA-18-058-02
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0271Patch, Vendor Advisory

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