# What is CVE-2017-0146?

> CVE-2017-0146 is a high-severity flaw (CVSS 8.8) in Windows Server 2008 from Microsoft, published on 17 March 2017. It is on the list of flaws known to be exploited, so criminals are already using it. The latest forecast puts its chance of use in the next 30 days at 90%. If you run an affected version, patch it first.

Canonical page: https://www.precursorintelligence.com/what-is/cve-2017-0146

## At a glance

- **Verdict:** Fix this now. Attackers are using this flaw today. If you run an affected version, it goes to the top of your list.
- **Precursor Intelligence risk score:** 78 out of 100 (High); action: Emergency patch. Kept up to date as the evidence changes.
- **Severity:** High (CVSS 8.8 out of 10)
- **Known to be exploited:** Yes, it is on the government list of flaws known to be exploited
- **Chance of use in the next 30 days:** 90% (latest exploit-likelihood forecast)
- **Published:** 17 March 2017
- **Record last updated:** 20 April 2025
- **Main product:** Windows Server 2008 from Microsoft
- **Affected products:** 27

## What is CVE-2017-0146? In plain terms

It can be attacked from anywhere on the internet with an ordinary user account, and nobody has to click anything. If it works, the attacker can read data, change data and take it offline.

### The official 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 execute arbitrary code via crafted packets, aka "Windows SMB Remote Code Execution Vulnerability." This vulnerability is different from those described in CVE-2017-0143, CVE-2017-0144, CVE-2017-0145, and CVE-2017-0148.

### What kind of flaw is it?

- Unknown: Unknown

### How an attack on it works

- Where an attacker can be: Anywhere on the internet
- How hard it is to pull off: Easy: no special conditions
- Login needed first: An ordinary user account
- Does someone have to click: No, nobody has to do anything
- What an attacker gets: Can read data, change data and take it offline

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

## Is CVE-2017-0146 being exploited? Yes

Attackers are already using it. It is on the government list of flaws known to be exploited, and the latest forecast puts the chance of it being used in the next 30 days at 90%.

Exploit likelihood over the last 7 days: 90%, 90%, 90%, 90%, 90%, 90%, 90%.

### Timeline

- 17 March 2017: Published
- 20 April 2025: Record last updated

### How Precursor Intelligence ranks it

CVE-2017-0146 scores **78 out of 100 (High)**, with the action "Emergency patch".

Every published flaw gets a risk score from 0 to 100, kept up to date as the evidence changes. Four things go into the score, from the one that counts most to the ones that count less:

- Evidence it is being exploited: biggest factor
- How severe it is: strong factor
- How widely exposed it is: smaller factor
- Threat activity around it: smaller factor

85 and above is Critical. Anything confirmed as exploited is always marked for an emergency patch, whatever its score. When this flaw matches software you track, it lands in your list with its score and the reasons behind it.

## Who is affected by CVE-2017-0146?

The published record lists 27 products.

- [Windows Server 2008](https://www.precursorintelligence.com/product/microsoft/windows_server_2008) by [Microsoft](https://www.precursorintelligence.com/vendors/microsoft) (Operating system): r2-sp1
- [Acuson P300 Firmware](https://www.precursorintelligence.com/product/siemens/acuson_p300_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): 13.02, 13.03, 13.20, 13.21
- [Acuson P500 Firmware](https://www.precursorintelligence.com/product/siemens/acuson_p500_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): va10, vb10
- [Acuson Sc2000 Firmware](https://www.precursorintelligence.com/product/siemens/acuson_sc2000_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): 4.0 to 4.0e, 5.0a
- [Acuson X700 Firmware](https://www.precursorintelligence.com/product/siemens/acuson_x700_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): 1.0, 1.1
- [Syngo Sc2000 Firmware](https://www.precursorintelligence.com/product/siemens/syngo_sc2000_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): 4.0 to 4.0e, 5.0a
- [Acuson P300](https://www.precursorintelligence.com/product/siemens/acuson_p300) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Acuson P500](https://www.precursorintelligence.com/product/siemens/acuson_p500) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Acuson Sc2000](https://www.precursorintelligence.com/product/siemens/acuson_sc2000) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Acuson X700](https://www.precursorintelligence.com/product/siemens/acuson_x700) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Server Message Block](https://www.precursorintelligence.com/product/microsoft/server_message_block) by [Microsoft](https://www.precursorintelligence.com/vendors/microsoft) (Application): 1.0
- [Syngo Sc2000](https://www.precursorintelligence.com/product/siemens/syngo_sc2000) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Tissue Preparation System](https://www.precursorintelligence.com/product/siemens/tissue_preparation_system) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Tissue Preparation System Firmware](https://www.precursorintelligence.com/product/siemens/tissue_preparation_system_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Versant Kpcr Molecular System](https://www.precursorintelligence.com/product/siemens/versant_kpcr_molecular_system) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Versant Kpcr Molecular System Firmware](https://www.precursorintelligence.com/product/siemens/versant_kpcr_molecular_system_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Versant Kpcr Sample Prep](https://www.precursorintelligence.com/product/siemens/versant_kpcr_sample_prep) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Hardware): version not specified
- [Versant Kpcr Sample Prep Firmware](https://www.precursorintelligence.com/product/siemens/versant_kpcr_sample_prep_firmware) by [Siemens](https://www.precursorintelligence.com/vendors/siemens) (Operating system): all versions
- [Windows 10 1507](https://www.precursorintelligence.com/product/microsoft/windows_10_1507) by [Microsoft](https://www.precursorintelligence.com/vendors/microsoft) (Operating system): version not specified
- [Windows 10 1511](https://www.precursorintelligence.com/product/microsoft/windows_10_1511) by [Microsoft](https://www.precursorintelligence.com/vendors/microsoft) (Operating system): version not specified
- [Windows 10 1607](https://www.precursorintelligence.com/product/microsoft/windows_10_1607) by [Microsoft](https://www.precursorintelligence.com/vendors/microsoft) (Operating system): version not specified
- [Windows 7](https://www.precursorintelligence.com/product/microsoft/windows_7) by [Microsoft](https://www.precursorintelligence.com/vendors/microsoft) (Operating system): version not specified
- [Windows 8.1](https://www.precursorintelligence.com/product/microsoft/windows_8.1) by [Microsoft](https://www.precursorintelligence.com/vendors/microsoft) (Operating system): all versions
- [Windows Rt 8.1](https://www.precursorintelligence.com/product/microsoft/windows_rt_8.1) by [Microsoft](https://www.precursorintelligence.com/vendors/microsoft) (Operating system): version not specified
- [Windows Server 2012](https://www.precursorintelligence.com/product/microsoft/windows_server_2012) by [Microsoft](https://www.precursorintelligence.com/vendors/microsoft) (Operating system): r2
- [Windows Server 2016](https://www.precursorintelligence.com/product/microsoft/windows_server_2016) by [Microsoft](https://www.precursorintelligence.com/vendors/microsoft) (Operating system): version not specified
- [Windows Vista](https://www.precursorintelligence.com/product/microsoft/windows_vista) by [Microsoft](https://www.precursorintelligence.com/vendors/microsoft) (Operating system): version not specified

## How do I fix CVE-2017-0146?

1. **Check whether you run it.** Compare your versions with the affected products above. Not sure what you run? Precursor Intelligence can work it out from your public website, or you can pick it from a list.
2. **Apply the vendor’s fix.** Install the update named in the vendor’s advisory. We’ve put the advisory first in the list.
3. **If you can’t patch today.** Follow any mitigation the vendor publishes, and limit who can reach the affected system from the internet until the update is in.
4. **Check it wasn’t used before you patched.** Because criminals are already using this flaw, look for signs of a break-in on affected systems using the vendor’s guidance.

### References

- [portal.msrc.microsoft.com](https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0146) (Patch, Vendor advisory)
- [packetstormsecurity.com](http://packetstormsecurity.com/files/154690/DOUBLEPULSAR-Payload-Execution-Neutralization.html) (Exploit, Third-party advisory, Vulnerability database)
- [packetstormsecurity.com](http://packetstormsecurity.com/files/156196/SMB-DOUBLEPULSAR-Remote-Code-Execution.html) (Exploit, Third-party advisory, Vulnerability database)
- [securityfocus.com](http://www.securityfocus.com/bid/96707) (Broken link, Third-party advisory, Vulnerability database)
- [securitytracker.com](http://www.securitytracker.com/id/1037991) (Broken link, Third-party advisory, Vulnerability database)
- [cert-portal.siemens.com](https://cert-portal.siemens.com/productcert/pdf/ssa-701903.pdf) (Third-party advisory)
- [cert-portal.siemens.com](https://cert-portal.siemens.com/productcert/pdf/ssa-966341.pdf) (Third-party advisory)
- [ics-cert.us-cert.gov](https://ics-cert.us-cert.gov/advisories/ICSMA-18-058-02) (Third-party advisory, Government resource)
- [exploit-db.com](https://www.exploit-db.com/exploits/41891/) (Exploit, Third-party advisory, Vulnerability database)
- [exploit-db.com](https://www.exploit-db.com/exploits/41987/) (Exploit, Third-party advisory, Vulnerability database)
- [exploit-db.com](https://www.exploit-db.com/exploits/43970/) (Exploit, Third-party advisory, Vulnerability database)

## Questions

### What is CVE-2017-0146?

CVE-2017-0146 is a high-severity flaw in Windows Server 2008 from Microsoft, published on 17 March 2017. It can be attacked from anywhere on the internet with an ordinary user account, and nobody has to click anything. If it works, the attacker can read data, change data and take it offline.

### How serious is CVE-2017-0146?

It scores 8.8 out of 10 on the CVSS severity scale, which is high. Our risk score for CVE-2017-0146 is 78 out of 100, which is High. Its action is "Emergency patch". Attackers are using this flaw today. If you run an affected version, it goes to the top of your list.

### Is CVE-2017-0146 being exploited?

Attackers are already using it. It is on the government list of flaws known to be exploited, and the latest forecast puts the chance of it being used in the next 30 days at 90%.

### Which versions does CVE-2017-0146 affect?

For Windows Server 2008 from Microsoft: r2-sp1. The record lists 27 products in all, each with its versions, under "Who is affected" on this page.

### How do I fix CVE-2017-0146?

Install the update the vendor names in its advisory, linked first under "How do I fix" on this page. If you can't patch today, follow the vendor's mitigation and limit who can reach the affected system from the internet. Because criminals are already using it, also check affected systems for signs of a break-in.

## Does CVE-2017-0146 affect you?

Precursor Intelligence keeps checking for you:

- **Tell us what you run.** Pick your software from a list, or let us work it out from your website.
- **We match it to every flaw.** Over 400,000 published flaws, checked against your list.
- **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it.
- **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools.

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