IOC Radar
CVEMediumSignal 54/100EPSS 20.2%

CVE-2026-21533

First Seen
Jun 2, 2026
Last Seen
Jun 3, 2026
Jun 2
First Seen
3d ago
Jun 3
Last Seen
2d ago
2
Reports
source reports
72%
Confidence
medium
Found in 2 reports. Confidence: medium. · Confidence scores are heuristic. Verify before acting on results.
CVE
Known vulnerability being actively exploited in the wild.
MISP Category
vulnerability
EPSS Score
20.20%
EPSS Percentile
95.6th
Confidence
72%
Signal Score
54 / 100
IDS Rule
No
CVE Intelligence
Exploit Probability20.20%
95.6th percentile of all CVEs
Threat Context
Threat Actors3
TTA0001UUNC6201AAPT28
Malware Families2
MMetasploitCCobalt Strike
Tags

Feed Intelligence Summary

2 reports72% confidence
RF
Recorded Future Blog
Mar 12, 2026
February 2026 CVE Landscape: 13 Critical Vulnerabilities Mark 43% Drop from January
22 IOCs in report
BC
Blackswan Cybersecurity
Mar 10, 2026
THREAT INTELLIGENCE REPORT Windows Remote Desktop Privilege Escalation (CVE-2026-21533) Exploit for Sale March 10, 2026
1 IOC in report

Activity Timeline

2 total obs
Mar 12Mar 10

Threat Activity Heatmap

· Peak: 2026-03-10
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24h
0
Dormant
7d
0
Dormant
30d
0
Dormant
3mo
2
Minimal
Threat ScoreMedium Risk
54
SIGNAL
Signal Score
72%
Confidence
2
Reports
First seenJun 2, 2026
Last seenJun 3, 2026

VirusTotal

Not checked

Export & API

STIX 2.1 Bundle
CSV Export
Permalink

IOC Journey

medium
First detected 3 days ago · Last seen 2 days ago
Appeared in 2 threat reports from 2 sources
Associated with: TA0001, UNC6201, APT28
Used by malware: Metasploit, Cobalt Strike