CVE-2021-31199

Microsoft Enhanced Cryptographic Provider: Privilege Escalation

As of , CVE-2021-31199 in Microsoft Enhanced Cryptographic Provider is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch soon.

Exploited
Yes: CISA listed it on 3 November 2021
US federal deadline
17 November 202114 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Not known to CISA
EPSS score
0.03Higher than 86% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
Not availableCISA listed it before 4 February 2022, where the EPSS files we read begin.
Public exploit
None foundNeither Metasploit nor Exploit-DB lists one.
Fix
No vendor link in CISA's entry

What CISA says to do

Apply updates per vendor instructions.

CISA's required action

What the flaw is

Microsoft Enhanced Cryptographic Provider contains an unspecified vulnerability that allows for privilege escalation.

CISA's description

Microsoft Enhanced Cryptographic Provider Elevation of Privilege Vulnerability

The CVE record's description, from microsoft

CVE published
8 June 2021
Assigned by
microsoft
CVSS
5.2 Medium (CVSS 3.1, from the CNA)
CISA SSVC, exploitation
active
CISA SSVC, automatable
no
CISA SSVC, technical impact
total

Timeline

  1. The CVE record was published.
  2. CISA added it to its list of exploited vulnerabilities.
  3. The US federal deadline to fix it.

Enhanced Cryptographic Provider: other exploited entries

VulnerabilityProductOur groupListedDeadlineEPSS
CVE-2021-31201Privilege EscalationMicrosoft Enhanced Cryptographic ProviderPatch soon0.03

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