critical Known exploitedREV. 01

CVE-2017-7494SambaCry — Uploaded Library Loaded by the File Server

A client that can write to a Samba share can make the server load that file as a library and run it, turning a writable share into code execution.

YOUR NEXT MOVE

Upgrade Samba past 4.6.4, 4.5.10 or 4.4.14, and mark shares as not scriptable where you can.

Read the risk

THE VITAL STATS
CVSS score
9.8/ 10
CVSS v3.1
EPSS probability
99%
Likelihood of exploitation
Attack complexity
Low
Conditions needed to exploit
Known exploited
Yes — CISA KEV
CVE published
2017-05-30
Added to KEV
2023-03-30
Exploit published
Not recorded
Confidence
high
Kill chain
initial access
MITRE ATT&CK
T1190, T1059
Severity
critical

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

Attacker needsWrite access to a share

Fixed inSamba 4.6.4, Samba 4.5.10, Samba 4.4.14

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

Printing history

THE RECORD
  1. r1Initial base card

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

crds:cve-2017-7494 · CRDS 0.1 · Issued 2026-08-07