high Known exploitedREV. 01

CVE-2017-0148Windows File Sharing — Code Execution in the Legacy Protocol

The first version of the Windows file-sharing protocol mishandles crafted requests and runs attacker code — one of the batch of flaws, alongside EternalBlue, that carried two worldwide ransomware outbreaks.

YOUR NEXT MOVE

Apply Microsoft's update, and retire the first version of the file-sharing protocol wherever it still runs.

Read the risk

THE VITAL STATS
CVSS score
8.1/ 10
CVSS v3.1
EPSS probability
99%
Likelihood of exploitation
Attack complexity
High
Conditions needed to exploit
Known exploited
Yes — CISA KEV
CVE published
2017-03-17
Added to KEV
2022-04-06
Exploit published
Yes
Confidence
medium
Kill chain
initial access
MITRE ATT&CK
T1190
Severity
high

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attacker needsNetwork access to the file-sharing port

Behind the card

5 REFERENCES
Field-level provenanceTRACE THE SOURCES +

Which source supports each field, when it was retrieved, and who extracted it.

FieldsSourceRetrievedExtractorConfidence
cvss, exploitation.attack_complexity, exploitation.exploit_available, references, published_atnvd.nist.gov2026-08-07scrty-crds-pipeline/0.1high
exploitation.known_exploited, exploitation.kev_addedcisa.gov2026-08-07scrty-crds-pipeline/0.1high
epssapi.first.org2026-08-07scrty-crds-pipeline/0.1high
title, summary, severity, remediation, mitre_attack, kill_chain, recommended_action, confidence, tags, exploitation.prerequisitesnvd.nist.gov2026-08-07claude-codehigh
title, summarynvd.nist.gov2026-09-20humanhigh

Printing history

THE RECORD
  1. r1Initial base card

First printing. This card has not been reprinted since publication.

crds:cve-2017-0148 · CRDS 0.1 · Issued 2026-08-07