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CyberSigur / Security Intelligence

Known exploited vulnerabilities

Browse CISA's Known Exploited Vulnerabilities catalog. Search by CVE, vendor, or product. Information is published by the US Cybersecurity and Infrastructure Security Agency.

Official CISA source ↗CISA updated: 2026-10-27

1,760 vulnerabilities · Page 9 of 88

CVE-2026-34926

Trend Micro Apex One (On-Premise) Directory Traversal Vulnerability

Trend Micro · Apex One · Added: 2026-05-21

Trend Micro Apex One (on-premise) contains a directory traversal vulnerability that could allow a pre-authenticated local attacker to modify a key table on the server to inject malicious code to deploy to agents on affected installations.

CISA recommended action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CVE details ↗
CVE-2008-4250

Microsoft Windows Buffer Overflow Vulnerability

Microsoft · Windows · Added: 2026-05-20

Microsoft Windows contains a buffer overflow vulnerability in the Windows Server Service that allows remote attackers to execute arbitrary code via a crafted RPC request that triggers an overflow during path canonicalization.

CISA recommended action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CVE details ↗
CVE-2009-1537

Microsoft DirectX NULL Byte Overwrite Vulnerability

Microsoft · DirectX · Added: 2026-05-20

Microsoft DirectX contains a NULL byte overwrite vulnerability in the QuickTime Movie Parser Filter in quartz.dll in DirectShow which could allow remote attackers to execute arbitrary code via a crafted QuickTime media file.

CISA recommended action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CVE details ↗
CVE-2009-3459

Adobe Acrobat and Reader Heap-Based Buffer Overflow Vulnerability

Adobe · Acrobat and Reader · Added: 2026-05-20

Adobe Acrobat and Reader contain a heap-based buffer overflow vulnerability which could allow remote attackers to execute arbitrary code via a crafted PDF file that triggers memory corruption.

CISA recommended action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CVE details ↗
CVE-2010-0249

Microsoft Internet Explorer Use-After-Free Vulnerability

Microsoft · Internet Explorer · Added: 2026-05-20

Microsoft Internet Explorer contains an use-after-free vulnerability that could allow remote attackers to execute arbitrary code by accessing a pointer associated with a deleted object. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.

CISA recommended action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CVE details ↗
CVE-2010-0806

Microsoft Internet Explorer Use-After-Free Vulnerability

Microsoft · Internet Explorer · Added: 2026-05-20

Microsoft Internet Explorer contains an use-after-free vulnerability that could allow remote attackers to execute arbitrary code via vectors involving access to an invalid pointer after the deletion of an object. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.

CISA recommended action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CVE details ↗
CVE-2026-41091

Microsoft Defender Link Following Vulnerability

Microsoft · Defender · Added: 2026-05-20

Microsoft Defender contains a link following vulnerability that allows an authorized attacker to elevate privileges locally.

CISA recommended action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CVE details ↗
CVE-2026-45498

Microsoft Defender Denial of Service Vulnerability

Microsoft · Defender · Added: 2026-05-20

Microsoft Defender contains an unspecified vulnerability that allows for denial of service.

CISA recommended action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CVE details ↗
CVE-2026-42897

Microsoft Exchange Server Cross-Site Scripting Vulnerability

Microsoft · Microsoft · Added: 2026-05-15

Microsoft Exchange Server contains a cross-site scripting vulnerability during web page generation in Outlook Web Access and when certain interaction conditions are met, arbitrary JavaScript can be executed in the browser context.

CISA recommended action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CVE details ↗
CVE-2026-20182

Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability

Cisco · Catalyst SD-WAN · Added: 2026-05-14

Cisco Catalyst SD-WAN Controller & Manager contain an authentication bypass vulnerability that allows an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system.

CISA recommended action

Please adhere to CISA’s guidelines to assess exposure and mitigate risks associated with Cisco SD-WAN devices as outlined in CISA’s Emergency Directive 26-03 (URL listed below in Notes) and CISA’s Hunt & Hardening Guidance for Cisco SD-WAN Devices (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.

CVE details ↗
CVE-2026-42208

BerriAI LiteLLM SQL Injection Vulnerability

BerriAI · LiteLLM · Added: 2026-05-08

BerriAI LiteLLM contains a SQL injection vulnerability that allows an attacker to read data from the proxy's database and potentially modify it, leading to unauthorized access to the proxy and the credentials it manages.

CISA recommended action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CVE details ↗
CVE-2026-6973

Ivanti Endpoint Manager Mobile (EPMM) Improper Input Validation Vulnerability

Ivanti · Endpoint Manager Mobile (EPMM) · Added: 2026-05-07

Ivanti Endpoint Manager Mobile (EPMM) contains an improper input validation vulnerability that allows a remotely authenticated user with administrative access to achieve remote code execution.

CISA recommended action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CVE details ↗
CVE-2026-0300

Palo Alto Networks PAN-OS Out-of-bounds Write Vulnerability

Palo Alto Networks · PAN-OS · Added: 2026-05-06

Palo Alto Networks PAN-OS contains an out-of-bounds write vulnerability in the User-ID Authentication Portal (aka Captive Portal) service that can allow an unauthenticated attacker to execute arbitrary code with root privileges on the PA-Series and VM-Series firewalls by sending specially crafted packets.

CISA recommended action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Until the vendor releases an official fix, the following workaround should be implemented: - Restrict User-ID Authentication Portal access to only trusted zones. - Disable User-ID Authentication Portal if not required. 5/13/2026: Palo Alto has released a variety of patches. If these are relevant to your environment, please apply the designated patch.

CVE details ↗
CVE-2026-31431

Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability

Linux · Kernel · Added: 2026-05-01

Linux Kernel contains an incorrect resource transfer between spheres vulnerability that could allow for privilege escalation.

CISA recommended action

"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CVE details ↗
CVE-2026-41940Confirmed ransomware campaign use

WebPros cPanel & WHM and WP2 (WordPress Squared) Missing Authentication for Critical Function Vulnerability

WebPros · cPanel & WHM and WP2 (WordPress Squared) · Added: 2026-04-30

WebPros cPanel & WHM (WebHost Manager) and WP2 (WordPress Squared) contain an authentication bypass vulnerability in the login flow that allows unauthenticated remote attackers to gain unauthorized access to the control panel.

CISA recommended action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CVE details ↗
CVE-2024-1708Confirmed ransomware campaign use

ConnectWise ScreenConnect Path Traversal Vulnerability

ConnectWise · ScreenConnect · Added: 2026-04-28

ConnectWise ScreenConnect contains a path traversal vulnerability which could allow an attacker to execute remote code or directly impact confidential data and critical systems.

CISA recommended action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CVE details ↗
CVE-2026-32202

Microsoft Windows Protection Mechanism Failure Vulnerability

Microsoft · Windows · Added: 2026-04-28

Microsoft Windows Shell contains a protection mechanism failure vulnerability that allows an unauthorized attacker to perform spoofing over a network.

CISA recommended action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CVE details ↗
CVE-2024-57726Confirmed ransomware campaign use

SimpleHelp Missing Authorization Vulnerability

SimpleHelp · SimpleHelp · Added: 2026-04-24

SimpleHelp contains a missing authorization vulnerability that could allow low-privileged technicians to create API keys with excessive permissions. These API keys can be used to escalate privileges to the server admin role.

CISA recommended action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CVE details ↗
CVE-2024-57728Confirmed ransomware campaign use

SimpleHelp Path Traversal Vulnerability

SimpleHelp · SimpleHelp · Added: 2026-04-24

SimpleHelp contains a path traversal vulnerability that allows admin users to upload arbitrary files anywhere on the file system by uploading a crafted zip file (i.e. zip slip). This can be exploited to execute arbitrary code on the host in the context of the SimpleHelp server user.

CISA recommended action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CVE details ↗
CVE-2024-7399

Samsung MagicINFO 9 Server Path Traversal Vulnerability

Samsung · MagicINFO 9 Server · Added: 2026-04-24

Samsung MagicINFO 9 Server contains a path traversal vulnerability that could allow an attacker to write arbitrary files as system authority.

CISA recommended action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CVE details ↗
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