What is CVE-2021-33055?

CVE-2021-33055 is a critical-severity vulnerability in Microsoft Windows, classified under OS Command Injection. CVSS score: 9.8/10. Published 2021-08-30.

How severe is CVE-2021-33055?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2021-33055 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Microsoft Windows

CVE-2021-33055

Zoho ManageEngine ADSelfService Plus through 6102 allows unauthenticated remote code execution in non-English editions.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.181 (96.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Microsoft Windows
Zohocorp Manageengine_adselfservice_plus — versions 6.1
N/a — versions n/a

Weakness classification (CWE)

CWE-78 — OS Command Injection

Public proof-of-concept exploits

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC, Release Notes)
cve@mitre.org (x_refsource_CONFIRM, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2021-33055?: CVE-2021-33055 is a critical-severity vulnerability in Microsoft Windows, classified under OS Command Injection. CVSS score: 9.8/10. Published 2021-08-30.
How severe is CVE-2021-33055?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-33055 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.