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Weekly Signal
Live intelligence Updated 19 Aug 2026 · 20:27 UTC

Golang, Microsoft · Go, Windows, Windows 10 1507 +11 more

CVE-2020-0601

Microsoft Windows CryptoAPI Spoofing Vulnerability

Recommended action

Validate affected assets and exposure now, then remediate on an accelerated schedule. Microsoft Security patch CVE-2020-0601

View response plan
CVSS8.1
EPSS89.4%
KEVYes
ExploitationConfirmed exploitation
RemediationExplicit patch identified ↓

Assessment

Why it matters

CISA lists this vulnerability as known to be exploited; exploitation is confirmed; EPSS is 89.4%; technical severity is CVSS 8.1.

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'.

Who should care

  • Teams operating Go, Windows, Windows 10 1507 +11 more
  • Vulnerability and exposure management teams
  • Security operations teams monitoring exploitation activity

Response plan

What I would do

  1. Confirm whether Go, Windows, Windows 10 1507 +11 more is present in the environment.
  2. Identify affected versions and establish whether vulnerable services are exposed or reachable.
  3. Microsoft Security patch CVE-2020-0601
  4. Review relevant security telemetry for evidence of attempted or successful exploitation.
  5. Document the remediation decision and track it to verified completion.

Treatment intelligence

Remediation intelligence

Not yet verified

Vendor sources are listed before government and third-party guidance. Confirm product applicability and change prerequisites before deployment.

Verification noteAutomated link verification has not completed for this guidance yet.

Patch

Required Action

Technical details

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CWE
CWE-295
Affected versions
Golang Go (Start Including 1.12, End Excluding 1.12.16 | Start Including 1.13, End Excluding 1.13.7); Microsoft Windows; Microsoft Windows 10 1507 (Version - | Version -); Microsoft Windows 10 1607 (Version - | Version -); Microsoft Windows 10 1709 (Version - | Version - | Version -); Microsoft Windows 10 1803 (Version - | Version - | Version -); Microsoft Windows 10 1809; Microsoft Windows 10 1903 (Version - | Version - | Version -)
Fixed versions
Golang Go (Fixed from 1.12.16, 1.13.7)
Published
14 January 2020
Attack vector
Network
Privileges required
None
User interaction
Required

Signal timeline

  1. CVE published
  2. Added to CISA KEV
  3. Latest EPSS score: 89.4%
  4. Signal calculated at 82

External references

Live public intelligence This assessment combines public-source evidence. Validate the affected product, version and exposure against your own environment before making a risk decision.