CASCACascade Atlas

Evidence dossier

CVE-2020-0601

CVE-2020-0601

73.4–94.2Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

A spoofing vulnerability exists in the way Windows CryptoAPI (Crypt32.dll) validates Elliptic Curve Cryptography (ECC) certificates.An attacker could exploit the vulnerability by using a spoofed code-signing certificate to sign a malicious executable, making it appear the file was from a trusted, legitimate source, aka 'Windows CryptoAPI Spoofing Vulnerability'.

State
PUBLISHED
Published
Jan 14, 2020
Updated
Oct 21, 2025
Evidence coverage
72%
CISA KEVCatalog member

Apply updates per vendor instructions.

FIRST EPSS89.44%

2026-07-18 · v2026.06.15 · percentile 99.8%

Source stateConflict visible

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

CVEderivative copy
container

CVE Program Container

microsoftoriginal assertion
container

A spoofing vulnerability exists in the way Windows CryptoAPI (Crypt32.dll) validates Elliptic Curve Cryptography (ECC) certificates.An attacker could exploit the vulnerability by using a spoofed code-signing certificate to sign a malicious executable, making it appear the file was from a trusted, legitimate source, aka 'Windows CryptoAPI Spoofing Vulnerability'.

CISA KEVoriginal assertion
observed_exploitation

Microsoft Windows CryptoAPI Spoofing Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.894360000000; percentile 0.997700000000

Applicability

Cited product scope

Trace impact →
MicrosoftWindows
[{"status": "affected", "version": "10 Version 1803 for 32-bit Systems"}, {"status": "affected", "version": "10 Version 1803 for x64-based Systems"}, {"status": "affected", "version": "10 Version 1803 for ARM64-based Systems"}, {"status": "affected", "version": "10 Version 1809 for 32-bit Systems"}, {"status": "affected", "version": "10 Version 1809 for x64-based Systems"}, {"status": "affected", "version": "10 Version 1809 for ARM64-based Systems"}, {"status": "affected", "version": "10 Version 1709 for 32-bit Systems"}, {"status": "affected", "version": "10 Version 1709 for x64-based Systems"}, {"status": "affected", "version": "10 Version 1709 for ARM64-based Systems"}, {"status": "affected", "version": "10 for 32-bit Systems"}, {"status": "affected", "version": "10 for x64-based Systems"}, {"status": "affected", "version": "10 Version 1607 for 32-bit Systems"}, {"status": "affected", "version": "10 Version 1607 for x64-based Systems"}]unknown
MicrosoftWindows 10 Version 1903 for 32-bit Systems
[{"status": "affected", "version": "unspecified"}]unknown
MicrosoftWindows 10 Version 1903 for ARM64-based Systems
[{"status": "affected", "version": "unspecified"}]unknown
MicrosoftWindows 10 Version 1903 for x64-based Systems
[{"status": "affected", "version": "unspecified"}]unknown
MicrosoftWindows 10 Version 1909 for 32-bit Systems
[{"status": "affected", "version": "unspecified"}]unknown
MicrosoftWindows 10 Version 1909 for ARM64-based Systems
[{"status": "affected", "version": "unspecified"}]unknown
MicrosoftWindows 10 Version 1909 for x64-based Systems
[{"status": "affected", "version": "unspecified"}]unknown
MicrosoftWindows Server
[{"status": "affected", "version": "version 1803 (Core Installation)"}, {"status": "affected", "version": "2019"}, {"status": "affected", "version": "2019 (Core installation)"}, {"status": "affected", "version": "2016"}, {"status": "affected", "version": "2016 (Core installation)"}]unknown
MicrosoftWindows Server, version 1903 (Server Core installation)
[{"status": "affected", "version": "unspecified"}]unknown
MicrosoftWindows Server, version 1909 (Server Core installation)
[{"status": "affected", "version": "unspecified"}]unknown
Unknown vendorUnknown product
cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*; start including 1.12; end excluding 1.12.16supported
Unknown vendorUnknown product
cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*; start including 1.13; end excluding 1.13.7supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1507:-:*:*:*:*:*:x64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1507:-:*:*:*:*:*:x86:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x86:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:arm64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:x64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:x86:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:arm64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:x64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:x86:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:arm64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:arm64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x86:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:arm64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:x64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:x86:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_1803:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_1903:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_1909:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*supported

Assessments

CVSS by origin

8.1
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
5.8
nvd@nist.govCVSS 2.0 · role PrimaryAV:N/AC:M/Au:N/C:P/I:P/A:N
8.1
134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
8.1
CISA-ADPCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.