CVE-2021-42287

high

Description

Active Directory Domain Services Elevation of Privilege Vulnerability

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42287

https://www.bleepingcomputer.com/news/security/ai-powered-attack-exploited-papercut-flaws-to-hack-395-organizations/

https://www.greynoise.io/blog/ai-orchestrated-campaign-against-papercut-ng-mf

https://www.welivesecurity.com/en/eset-research/cosmicbeetle-steps-up-probation-period-ransomhub

https://thehackernews.com/2024/09/cosmicbeetle-deploys-custom-scransom.html

https://www.cisa.gov/news-events/cybersecurity-advisories/aa24-131a

https://arstechnica.com/security/2024/05/black-basta-ransomware-group-is-imperiling-critical-infrastructure-groups-warn/

https://www.hackthebox.com/blog/cve-2022-26923-certifried-explained

https://github.com/xLTJ/noPac

https://github.com/nguyenminhduc3103/CVE_TOOL_SIGMARULE

https://github.com/Chrisync/CVE-Scanner

https://github.com/DanielFEXKEX/CVE-Scanner

https://github.com/TryA9ain/noPac

https://github.com/XiaoliChan/Invoke-sAMSpoofing

https://github.com/knightswd/NoPacScan

https://github.com/cybersecurityworks553/noPac-detection

https://github.com/ricardojba/Invoke-noPac

https://github.com/waterrr/noPac

https://github.com/Ridter/noPac

https://github.com/cube0x0/noPac

https://github.com/WazeHell/sam-the-admin

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-42287

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42287

Details

Source: Mitre, NVD

Published: 2021-11-10

Updated: 2026-08-19

Named Vulnerability: noPacKnown Exploited Vulnerability (KEV)

Risk Information

CVSS v2

Base Score: 6.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 8.8

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

Severity: High

EPSS

EPSS: 0.7717