Exploited now

Every vulnerability CISA confirms is being exploited in the wild: listed in its Known Exploited Vulnerabilities catalog, or assessed as actively exploited in its Vulnrichment data, often days before the catalog. When it was confirmed, how soon after the CVE went public, and the vendors attackers go after first. Refreshed every ten minutes. Sources.

Updated under an hour ago ()

What this means for you

32 vulnerabilities confirmed exploited in the last 30 days; 39% of the last 12 months' were exploited by the day they were disclosed. Add your stack to see which of them you run.

Confirmed exploited, last 30 days
32
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Exploited by the day of disclosure, last 12 months
39%
of 301 confirmed
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Median days from disclosure to confirmed exploitation
4
last 12 months; list sorted fastest first
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Used in ransomware campaigns, last 12 months
25
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What this means for a patch cycle

Half of the vulnerabilities CISA confirmed exploited in the last 12 months were confirmed within 4 days of going public, and 39% by the day they were published. A monthly patch cycle leaves those exposed for weeks. Products from the vendors below, especially internet-facing ones, need an emergency patch path measured in days.

Where attackers strike first

Vendors by vulnerabilities confirmed exploited in the last 24 months; the top five account for 66% of the twelve listed. This counts confirmed attacks, not disclosed flaws, so a vendor is not rewarded for publishing fewer CVEs. Mapped health IT products account for 1 of them.
Vendors by vulnerabilities confirmed exploited
Microsoft80
Cisco28
Apple19
Fortinet17
Google16
Linux16
Ivanti13
Adobe11
Citrix11
Palo Alto Networks11

Are any of these in your stack?

Name the products you run and see every CVE that affects them, with exploited ones first. Free for one product; subscribers add their whole inventory and are emailed the moment one is exploited.

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Every confirmed exploitation

Showing: confirmed in 2025, Operating systems

Confirmed exploited in 2025. Product class: Operating systems (the site's classifier of CISA's product names). Clear these

39 exploited CVEs
Showing 1 to 10. Open a CVE for every field; narrower screens show fewer columns.
CVEVendor and vulnerabilityConfirmed exploitedAfter publicationSeverityEPSS
CVE-2025-21335
CISA KEV
Microsoft · Windows
Microsoft Windows Hyper-V NT Kernel Integration VSP Use-After-Free Vulnerability
CISA remediation due for federal agencies: Feb 4, 2025
Jan 14, 2025Same dayHigh 7.81%
CVE-2025-21334
CISA KEV
Microsoft · Windows
Microsoft Windows Hyper-V NT Kernel Integration VSP Use-After-Free Vulnerability
CISA remediation due for federal agencies: Feb 4, 2025
Jan 14, 2025Same dayHigh 7.82%
CVE-2025-21333
CISA KEV
Microsoft · Windows
Microsoft Windows Hyper-V NT Kernel Integration VSP Heap-based Buffer Overflow Vulnerability
CISA remediation due for federal agencies: Feb 4, 2025
Jan 14, 2025Same dayHigh 7.810%
CVE-2024-53104
CISA KEV
Linux · Kernel
Linux Kernel Out-of-Bounds Write Vulnerability
CISA remediation due for federal agencies: Feb 26, 2025
Feb 5, 202565 daysHigh 7.83%
CVE-2025-21418
CISA KEV
Microsoft · Windows
Microsoft Windows Ancillary Function Driver for WinSock Heap-Based Buffer Overflow Vulnerability
CISA remediation due for federal agencies: Mar 4, 2025
Feb 11, 2025Same dayHigh 7.82%
CVE-2025-21391
CISA KEV
Microsoft · Windows
Microsoft Windows Storage Link Following Vulnerability
CISA remediation due for federal agencies: Mar 4, 2025
Feb 11, 2025Same dayHigh 7.12%
CVE-2018-8639
CISA KEV
Ransomware
Microsoft · Windows
Microsoft Windows Win32k Improper Resource Shutdown or Release Vulnerability
CISA remediation due for federal agencies: Mar 24, 2025
Mar 3, 20252,274 daysHigh 8.422%
CVE-2024-50302
CISA KEV
Linux · Kernel
Linux Kernel Use of Uninitialized Resource Vulnerability
CISA remediation due for federal agencies: Mar 25, 2025
Mar 4, 2025106 daysMedium 5.51%
CVE-2025-26633
CISA KEV
Ransomware
Microsoft · Windows
Microsoft Windows Management Console (MMC) Improper Neutralization Vulnerability
CISA remediation due for federal agencies: Apr 1, 2025
Mar 11, 2025Same dayHigh 7.030%
CVE-2025-24993
CISA KEV
Microsoft · Windows
Microsoft Windows NTFS Heap-Based Buffer Overflow Vulnerability
CISA remediation due for federal agencies: Apr 1, 2025
Mar 11, 2025Same dayHigh 7.82%

How to read this

"Confirmed exploited" is the date CISA added the CVE to its Known Exploited Vulnerabilities catalog or assessed it as actively exploited, whichever came first. It is when exploitation was confirmed publicly, not when attackers started, so "after publication" is an upper bound: attackers were there at least that soon. "By disclosure day" means confirmed on or before the day the CVE record was published, the closest public measure of a zero-day. Dates are US Eastern, the calendar CISA uses. Vendors are named as CISA's catalog names them, otherwise as the assigning CNA does. EPSS is FIRST's estimate of the chance of exploitation in the next 30 days.

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