⚠ Known Exploited Vulnerability (KEV) Tracker

CISA KEV Catalog
⚠
About the KEV Catalog For the benefit of the cybersecurity community and network defenders — and to help every organization better manage vulnerabilities and keep pace with threat activity — CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild. Organizations should use the KEV catalog as an input to their vulnerability management prioritization framework. Per Binding Operational Directive 22-01, all federal civilian executive branch (FCEB) agencies are required to remediate KEV catalog vulnerabilities by their listed due dates. CISA strongly recommends all organizations — including private sector entities — prioritize remediation of KEV catalog vulnerabilities. View the full KEV catalog on CISA.gov →
Total KEVs
1,721
in CISA catalog
Ransomware-Linked
360
21% of catalog
Added Last 30 Days
46
92 in last 90 days
Latest Addition
2026-09-22
most recent entry
Tracked Vendors
20+
top 20 shown

Top Vendors

KEV count 21%+ ransomware-linked 42%+ ransomware-linked N RW · %Ransomware-linked share

Share of each bar's KEVs linked to ransomware. Thresholds track the catalog average of 20.9%, so they stay meaningful as it grows. Bars under 5 KEVs are left uncoloured — too few to rate a share.

Microsoft
388
117 RW · 30%
Cisco
99
7 RW · 7%
Apple
94
Adobe
81
11 RW · 14%
Google
75
Oracle
46
13 RW · 28%
Apache
40
8 RW · 20%
Ivanti
35
12 RW · 34%
Linux
31
2 RW · 6%
Fortinet
30
14 RW · 47%
VMware
26
9 RW · 35%
D-Link
26
2 RW · 8%
Citrix
24
7 RW · 29%
SonicWall
19
13 RW · 68%
Synacor
19
6 RW · 32%
Android
17
Palo Alto Networks
15
6 RW · 40%
Samsung
15
SAP
14
3 RW · 21%
Mozilla
13
1 RW · 8%

Top Products

KEV count 21%+ ransomware-linked 42%+ ransomware-linked N RW · %Ransomware-linked share

Share of each bar's KEVs linked to ransomware. Thresholds track the catalog average of 20.9%, so they stay meaningful as it grows. Bars under 5 KEVs are left uncoloured — too few to rate a share.

Windows · Microsoft
174
49 RW · 28%
Multiple Products · Apple
53
Chromium V8 · Google
41
Internet Explorer · Microsoft
36
6 RW · 17%
Flash Player · Adobe
33
5 RW · 15%
Kernel · Linux
31
2 RW · 6%
Office · Microsoft
29
3 RW · 10%
Win32k · Microsoft
25
11 RW · 44%
Exchange Server · Microsoft
17
13 RW · 76%
Zimbra Collaboration Suite (ZCS) · Synacor
17
5 RW · 29%
ColdFusion · Adobe
16
3 RW · 19%
SharePoint · Microsoft
14
8 RW · 57%
IOS and IOS XE Software · Cisco
14
Acrobat and Reader · Adobe
13
1 RW · 8%
Mobile Devices · Samsung
13
PAN-OS · Palo Alto Networks
12
6 RW · 50%
WebLogic Server · Oracle
12
2 RW · 17%
iOS, iPadOS, and macOS · Apple
11
Multiple Chipsets · Qualcomm
11
NetWeaver · SAP
10
2 RW · 20%
Clear 5 entries
CVE Vendor Product Vulnerability CVSS Added Due per BOD 22-01 Ransomware
CVE-2026-81578 PaperCut NG/MF PaperCut NG/MF Missing Authentication for Critical Function Vulnerability PaperCut NG/MF contains a missing authentication for critical function vulnerability which allows an unauthenticated remote attacker to modify certain system configurations. This vulnerability can be chained with CVE-2026-82078. 8.8 CNA 2026-08-31 2026-09-14 Unknown
CVE-2026-82078 PaperCut NG/MF PaperCut NG/MF Unsafe Reflection Vulnerability PaperCut NG/MF contains an unsafe reflection vulnerability that allows an attacker to manipulate system configuration parameters and execute arbitrary Java bytecode residing on the application classpath under the security context of the PaperCut server process. This vulnerability can be chained with CVE-2026-81578. 9.4 CNA 2026-08-31 2026-09-14 Unknown
CVE-2023-27351 PaperCut NG/MF PaperCut NG/MF Improper Authentication Vulnerability PaperCut NG/MF contains an improper authentication vulnerability that could allow remote attackers to bypass authentication on affected installations via the SecurityRequestFilter class. 8.2 CNA 2026-04-20 2026-05-04 Known
CVE-2023-2533 PaperCut NG/MF PaperCut NG/MF Cross-Site Request Forgery (CSRF) Vulnerability PaperCut NG/MF contains a cross-site request forgery (CSRF) vulnerability, which, under specific conditions, could potentially enable an attacker to alter security settings or execute arbitrary code. 8.4 CNA 2025-07-28 2025-08-18 Unknown
CVE-2023-27350 PaperCut MF/NG PaperCut MF/NG Improper Access Control Vulnerability PaperCut MF/NG contains an improper access control vulnerability within the SetupCompleted class that allows authentication bypass and code execution in the context of system. 9.8 CNA 2023-04-21 2023-05-12 Known
2023 Top Routinely Exploited Vulnerabilities