CVE-2021-1675Vulnerability
Microsoft Windows Print Spooler Remote Code Execution Vulnerability
Exploited in the wildCISA added it to its Known Exploited Vulnerabilities list on .
Reported by 2 independent sources · first reported by Huntress · last reported
Last reported 4 days ago
CISA KEVAdded 3 Nov 2021
Fix due 17 Nov 2021
Used by ransomware: knownCISA KEV catalogue
Fix due 17 Nov 2021
Used by ransomware: knownCISA KEV catalogue
EPSS85.3%
higher than 99% of CVEsFIRST EPSS, as of 21 Oct 2026
higher than 99% of CVEsFIRST EPSS, as of 21 Oct 2026
What the reports say
2 reports, newest first · the exact sentence from each-
INC and The Gentlemen Ransomware: Exposed AI Infrastructure“CVE-2021-1675 (PrintNightmare)Windows Print SpoolerAttempted, failed”
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Critical Vuln.: PrintNightmare Exposes Windows Servers to RCE“On June 29, Huntress was made aware of CVE-2021-1675 (now termed CVE-2021-34527), a critical remote code execution and local privilege escalation vulnerability dubbed “PrintNightmare.””
Indicators reported together
named in the same reports- 45.227.254[.]43in 1 report
- trulitesupport[.]comin 1 report
- 45.227.254[.]45in 1 report
- api.iquickline[.]comin 1 report
Copy these 4 indicators · defanged
Also named with it: CVE-2025-49113, CVE-2026-35616, CVE-2020-1472, CVE-2021-42278, CVE-2021-34527, CVE-2021-32547, CVE-2024-57727, CVE-2026-41940, CVE-2024-49112, CVE-2026-42208, CVE-2025-66568
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