IOC Radar
CVEHighVerifiedSignal 59/100EPSS 27.6%

CVE-2023-21529

First Seen
Jun 2, 2026
Last Seen
Jun 3, 2026
Jun 2
First Seen
2d ago
Jun 3
Last Seen
yesterday
3
Reports
source reports
75%
Confidence
high
Found in 3 reports. Confidence: high. · Confidence scores are heuristic. Verify before acting on results.
CVE
Known vulnerability being actively exploited in the wild.
MISP Category
vulnerability
EPSS Score
27.55%
EPSS Percentile
96.5th
Confidence
75%
Signal Score
59 / 100
IDS Rule
No
CVE Intelligence
Exploit Probability27.55%
96.5th percentile of all CVEs
Threat Context
Threat Actors1
HHive
Tags

Feed Intelligence Summary

3 reports75% confidence
RF
Recorded Future Blog
May 15, 2026
April 2026 CVE Landscape
33 IOCs in report
RF
Recorded Future Blog
May 15, 2026
April 2026 CVE Landscape
33 IOCs in report
MT
Microsoft Threat Intelligence
Apr 6, 2026
Storm-1175 focuses gaze on vulnerable web-facing assets in high-tempo Medusa ransomware operations
25 IOCs in report

Activity Timeline

3 total obs
May 15Apr 6

Threat Activity Heatmap

· Peak: 2026-05-15
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24h
0
Dormant
7d
0
Dormant
30d
2
Minimal
3mo
3
Moderate
Threat ScoreMedium Risk
59
SIGNAL
Signal Score
75%
Confidence
3
Reports
First seenJun 2, 2026
Last seenJun 3, 2026
Verified IOC

VirusTotal

Not checked

Export & API

STIX 2.1 Bundle
CSV Export
Permalink

IOC Journey

high
First detected 2 days ago · Last seen 1 day ago
Appeared in 3 threat reports from 3 sources
Associated with: Hive
Used by malware: Mirai, Hive, Medusa, Mimikatz, PsExec, Impacket