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ExploitedIn CISA KEVFix available

CVE-2020-1464

Exploitation confirmed. First attested on 2021-11-03 by CISA-ADP, CISA KEV, GCVE · kevintel.

  • Published2020-08-17
  • WeaknessCWE-347

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

A spoofing vulnerability exists when Windows incorrectly validates file signatures. An attacker who successfully exploited this vulnerability could bypass security features and load improperly signed files. In an attack scenario, an attacker could bypass security features intended to prevent improperly signed files from being loaded. The update addresses the vulnerability by correcting how Windows validates file signatures.

Timeline

dates in UTC
  1. 2020-08-1719:15CVE publishedNVD
  2. 2021-11-03Added to the CISA KEV catalogCISA KEV
  3. 2021-11-03Listed as exploited by GCVEGCVE
  4. 2021-11-03Exploitation first reportedCISA KEV
  5. 2025-02-0418:42SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-03 09:37 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-2020-1464?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-1464?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 server 2008
BranchAffectedFixed in
—all versionsno fix published
—= r2no fix published
Microsoft windows server 2012
BranchAffectedFixed in
—all versionsno fix published
—= r2no fix published
Microsoft windows 10 1507
BranchAffectedFixed in
—all versionsno fix published

15 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 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
  • Microsoft Windows 10 Version 1909

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

    Affected
    • ≥ 10.0.0, < publicationfixed in publicationcustom
  • Microsoft Windows Server, version 1909 (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

  1. CISA’s required action: Apply updates per vendor instructions.due 2022-05-03

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2021-11-03
Patch Due Date
2022-05-03
Ransomware Use
Unknown
Required Action
Apply updates per vendor instructions.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Published
2020-08-17
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-75g4-7255-wxgc

Frequently asked questions

What is CVE-2020-1464?

A spoofing vulnerability exists when Windows incorrectly validates file signatures. An attacker who successfully exploited this vulnerability could bypass security features and load improperly signed files. In an attack scenario, an attacker could bypass security features intended to prevent improperly signed files from being loaded. The update addresses the vulnerability by correcting how Windows validates file signatures.

Is CVE-2020-1464 actively exploited?

Yes. CVE-2020-1464 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2022-05-03.

What is the CVSS score for CVE-2020-1464?

CVE-2020-1464 has a CVSS v3 base score of 5.5 (MEDIUM severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

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Sources for this record