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Public proof of conceptFix available

CVE-2020-1337

A public proof of concept exists; no exploitation attested.

  • Published2020-08-17
  • WeaknessCWE-367

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An elevation of privilege vulnerability exists when the Windows Print Spooler service improperly allows arbitrary writing to the file system. An attacker who successfully exploited this vulnerability could run arbitrary code with elevated system privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted script or application. The update addresses the vulnerability by correcting how the Windows Print Spooler Component writes to the file system.

Timeline

dates in UTC
  1. 2020-08-1719:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-1337?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-1337?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Microsoft windows 10
BranchAffectedFixed in
—all versionsno fix published
1607.x= 1607no fix published
1709.x= 1709no fix published
1803.x= 1803no fix published
1809.x= 1809no fix published
1903.x= 1903no fix published
1909.x= 1909no fix published
2004.x= 2004no fix published
Microsoft windows server 2016
BranchAffectedFixed in
—all versionsno fix published
1903.x= 1903no fix published
1909.x= 1909no fix published
2004.x= 2004no fix published
Microsoft windows server 2008
BranchAffectedFixed in
—all versionsno fix published
—= r2no fix published

5 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA30 products

As microsoft, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Microsoft Windows 10 Version 2004

    platforms: 32-bit Systems, ARM64-based Systems, x64-based Systems

    Affected
    • ≥ 10.0.0, < publicationfixed in publicationcustom
  • Microsoft Windows Server version 2004

    platforms: x64-based Systems

    Affected
    • ≥ 10.0.0, < publicationfixed in publicationcustom
  • Microsoft Windows 10 Version 1803

    platforms: 32-bit Systems, x64-based Systems, ARM64-based Systems

    Affected
    • ≥ 10.0.0, < publicationfixed in publicationcustom
  • Microsoft Windows 10 Version 1809

    platforms: 32-bit Systems, x64-based Systems, ARM64-based Systems

    Affected
    • ≥ 10.0.0, < publicationfixed in publicationcustom
  • Microsoft Windows Server 2019

    platforms: x64-based Systems

    Affected
    • ≥ 10.0.0, < publicationfixed in publicationcustom
  • Microsoft Windows Server 2019 (Server Core installation)

    platforms: x64-based Systems

    Affected
    • ≥ 10.0.0, < publicationfixed in publicationcustom

24 more products in the CVE record.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2024-05-29

Fix

Advisories and patches

Detection

read 2026-11-02 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
4 repositories, unverifiedmath1as/CVE-2020-1337-exploitVoidSec/CVE-2020-1337neofito/CVE-2020-1337sailay1996/cve-2020-1337-poc
PoC-in-GitHub
Metasploit modules
1 moduleexploit/windows/local/cve_2020_1337_printerdemonrank: excellentModule metadata: Metasploit Framework, © Rapid7, Inc., BSD-3-Clause.
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2020-08-17
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2020-1337?

An elevation of privilege vulnerability exists when the Windows Print Spooler service improperly allows arbitrary writing to the file system. An attacker who successfully exploited this vulnerability could run arbitrary code with elevated system privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted script or application. The update addresses the vulnerability by correcting how the Windows Print Spooler Component writes to the file system.

Is CVE-2020-1337 actively exploited?

Active exploitation of CVE-2020-1337 has not been confirmed. Its EPSS score was 14.2% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-1337?

CVE-2020-1337 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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