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CVE-2020-0601

Exploited in the wild. In CISA KEV since 2021‑11‑03. Fixed in 1.12.16.

CVSS 3.18.1HighEPSS percentile99th89% chance in 30 daysCISA KEVListedsince 2021-11-03, due 2022-05-03
Public exploit: 2 sourcesFix1.12.16Upgrade to this build

Published Updated Sources: CVE.org, NVD, BDU

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • Microsoft WindowsAffected: 10 Version 1803 for 32-bit SystemsUpgrade to: not statedAffected: 10 Version 1803 for x64-based SystemsUpgrade to: not statedAffected: 10 Version 1803 for ARM64-based SystemsUpgrade to: not statedAffected: 10 Version 1809 for 32-bit SystemsUpgrade to: not stated + 9 more branchesStated by: CVE record
  • Microsoft Windows ServerAffected: version 1803 (Core Installation)Upgrade to: not statedAffected: 2019Upgrade to: not statedAffected: 2019 (Core installation)Upgrade to: not statedAffected: 2016Upgrade to: not stated + 2 more branchesStated by: CVE record
  • Microsoft Windows 10 Version 1903 for 32-bit SystemsAffected: unspecifiedUpgrade to: not statedStated by: CVE record
  • Golang GoAffected: ≥ 1.12, < 1.12.16Upgrade to: 1.12.16Stated by: NVD

Versions as the sources state them. Full version matrix after sign-in

Check it yourselfA free OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Request an assessment to establish which checks fit your systems.

Coverage timeline

0 publishers

  1. Added to CISA KEV catalog

    ·CISA KEV

Sourced from public security reporting — each date is when it was published, not when it happened.

What it is

From the CVE record

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'.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS99th
Public exploit
CISA KEV
CISA KEV

Listed as exploited in the wild since 2021-11-03.

US federal agencies must remediate by 2022-05-03.

Apply updates per vendor instructions.
Public exploits

2 sources with a proof of concept or module.

Exploit links, PoCs and Metasploit modules after sign-in
EPSS

89% chance of exploitation activity in the next 30 days, which ranks it in the 99th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

The patch came 79 days before any public exploit.

  1. OpenVAS check added
  2. EPSS band changecritical → high
  3. Public exploit / PoCsource: packetstorm
  4. Patch availablerecord updated
  5. Added to CISA KEV
  6. Publishedweakness classified, att&ck mapped

Affected products

And 31 more affected products. See all after sign-in

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

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

Scored 8.1 by NVD.

How it is reached

  • Attack Vector NetworkExploitable remotely over the network without any special conditions
  • Attack Complexity LowNo special conditions — the attack can be reliably reproduced
  • Privileges Required NoneNo authentication required — anyone can exploit this
  • User Interaction RequiredA user must click a link, open a file, or perform some action

Scope

  • Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

  • Confidentiality HighTotal information disclosure — all data in the component is compromised
  • Integrity HighTotal loss of integrity — attacker can modify any data in the component
  • Availability NoneNo availability impact

Weaknesses

ATT&CK techniques

Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.

Sources

References in the record

And 3 more references. See all after sign-in

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We'll flag the next CVE, public exploit or patch for Windows, not every advisory. This one: actively exploited.