How severe is CVE-2017-0147?

CVE-2017-0147 has a CVSS score of 7.5/10, rated HIGH. Immediate patching is strongly recommended.

Which products are affected by CVE-2017-0147?

CVE-2017-0147 affects the following products: microsoft windows 7, microsoft windows 8.1, microsoft windows 10 1507, microsoft windows 10 1511, microsoft windows 10 1607, microsoft windows rt 8.1, microsoft windows server 2008, microsoft windows server 2012, and 10 more.

How do I patch CVE-2017-0147?

Apply the microsoft windows 7 security patch or hotfix for CVE-2017-0147 on the affected version, following the vendor advisory for your exact build.

How do I detect CVE-2017-0147 across my infrastructure?

Inventory every microsoft windows 7 deployment and check each version against the affected-products list above.

How do I mitigate CVE-2017-0147 if there is no patch (or I can't update yet)?

Assume what was exposed is already known: rotate any credential, token or key that the affected component could return, restrict the endpoint to callers that genuinely need it, and strip sensitive fields from responses and error output at the boundary rather than relying on the client not to read them. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.

Is CVE-2017-0147 actively exploited in the wild?

Yes. There are 18 known exploit references for CVE-2017-0147, including 4 documented proof-of-concept exploits on Exploit-DB and 13 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2017-0147?

CVE-2017-0147 has an EPSS (Exploit Prediction Scoring System) score of 99.7%, placing it in the 100th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Is CVE-2017-0147 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2017-0147 (Microsoft Windows SMBv1 Information Disclosure Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2022-05-24. CISA required all US federal civilian agencies to remediate this vulnerability by 2022-06-14. The required action was: Apply updates per vendor instructions. This CVE has been used in known ransomware campaigns. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

Which products and versions are affected by CVE-2017-0147?

CVE-2017-0147 affects microsoft windows 7; microsoft windows 8.1; microsoft windows 10 1507; microsoft windows 10 1511, and 14 more product(s). Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2017-0147 published, and has it been updated?

CVE-2017-0147 was published on March 17, 2017 and was last updated on June 17, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🛡️

CISA KEV · ACTIVELY EXPLOITED

HIGH severity

CVE-2017-0147 — Windows 7

HIGH

CVE-2017-0147 is a high-severity (CVSS 7.5) vulnerability in microsoft windows 7. It is in CISA's Known Exploited Vulnerabilities catalog (added 2022-05-24) and has been used in ransomware campaigns — treat it as actively exploited and patch now. A fix is available — see the affected versions and patch details below.

The SMBv1 server 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,…

Published

Mar 17, 2017

Updated

Jun 17, 2026

Affected

18 products

Patched

See advisory

Exploits

18 known

Exploitation data as of Oct 22, 2026 · OSV.dev, NVD, CISA KEV, FIRST.org (EPSS)

Exploitation Status

Actively exploited in the wild

Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2022-05-24 — including use in ransomware campaigns. Federal agencies were required to remediate by 2022-06-14.
CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.

Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2017-0147.

EPSS Exploitation Probability

via FIRST.org ↗

99.7%probability of exploitation in next 30 days

Very High Risk0.00%

Lower risk than most CVEs100th percentile — riskier than 100% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2017-0147 by exploitation likelihood (EPSS) against impact (CVSS). In the shaded patch-first corner (EPSS 50%+, CVSS 7.0+).

Where this sits among everything scored

Of 395,249 CVEs with a current EPSS score, this one falls in the ≥ 90% band (highlighted). Counts from FIRST.org, log-scaled.

Description

The SMBv1 server 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, 1511, and 1607; and Windows Server 2016 allows remote attackers to obtain sensitive information from process memory via a crafted packets, aka "Windows SMB Information Disclosure Vulnerability."

Affected Products

18 products · 27 configurations

windows 7microsoft

all

windows 8.1microsoft

all

windows 10 1507microsoft

all

windows 10 1511microsoft

all

windows 10 1607microsoft

all

windows rt 8.1microsoft

all

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-43970remotewindows✓ Verified

Microsoft Windows - 'EternalRomance'/'EternalSynergy'/'EternalChampion' SMB Remote Code Execution (Metasploit) (MS17-010)

by Metasploit · Feb 5, 2018

Exploit-DB Source

EDB-41987remotewindows_x86-64

Microsoft Windows Server 2008 R2 (x64) - 'SrvOs2FeaToNt' SMB Remote Code Execution (MS17-010)

by Juan Sacco · May 10, 2017

Exploit-DB Source

EDB-41891doswindows✓ Verified

Microsoft Windows - SMB Remote Code Execution Scanner (MS17-010) (Metasploit)

by Sean Dillon · Apr 17, 2017

Exploit-DB Source

EDB-47456remotewindows✓ Verified

DOUBLEPULSAR - Payload Execution and Neutralization (Metasploit)

by Metasploit · Oct 2, 2019

Exploit-DB Source

Detection & mitigation playbook

Vendor / appliance

Detect
Inventory every microsoft windows 7 deployment and check each version against the affected-products list above.
Fix
Apply the microsoft windows 7 security patch or hotfix for CVE-2017-0147 on the affected version, following the vendor advisory for your exact build.
Workarounds
Assume what was exposed is already known: rotate any credential, token or key that the affected component could return, restrict the endpoint to callers that genuinely need it, and strip sensitive fields from responses and error output at the boundary rather than relying on the client not to read them. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.

Frequently Asked Questions

O3 Security · Runtime Protection

Is CVE-2017-0147 being exploited in your environment?

Detect and block the exploit chain at execution, on systems you cannot patch yet.

Protect my workloads How runtime protection works

CVE-2017-0147 — Windows 7

Exploitation Status

Actively exploited in the wild

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Description

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Frequently Asked Questions

Is CVE-2017-0147 being exploited in your environment?