9.3

CVE-2021-36958: microsoft windows

CVSS: 9.3v2.0HighModified
Published 12-08-2021Last modified 10-08-2026
Open JSON

Vulnerability summary

CVE-2021-36958 is a high (CVSS 9.3) vulnerability in microsoft windows. EPSS estimates a 30.79% chance of exploitation in the next 30 days, higher than 98.2% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.3/10
010
High · v2.0 (NVD)
EPSS score
30.79%
0%100%
High · +0.22 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 12-08-2021
    PublishedVulnerability first disclosed.
  2. 10-08-2026
    Last modifiedVulnerability information updated.

Description

A remote code execution vulnerability exists when the Windows Print Spooler service improperly performs privileged file operations. An attacker who successfully exploited this vulnerability could run arbitrary code with SYSTEM privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

30.79%

Chance of exploitation in the next 30 days

Percentile

98%

Versus all other CVEs

30-day change

+0.22 pp

From 30.57% on 19-09-2026

19-09-202619-10-2026
EPSS score
30.79%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Microsoft25 products

1 vendor · 25 products

References

3 links