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CWE-346

Origin Validation Error

139 CVEs Avg CVSS 6.6 MITRE
13
CRITICAL
57
HIGH
55
MEDIUM
12
LOW
23
POC
1
KEV

Monthly

CVE-2025-66593 MEDIUM PATCH This Month

Synology Assistant before version 7.0.6-50085 exposes local users to arbitrary file write with restricted content via an origin validation error triggered during the installation process. The CVSS vector (AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H) indicates that while integrity impact is limited, availability impact is rated High - meaning an attacker can corrupt or overwrite files in ways that destabilize the system, even though the written content is constrained. No public exploit code exists and CISA has not added this to KEV; EPSS stands at 0.00%, reflecting minimal observed exploitation interest.

Information Disclosure Synology
NVD
CVSS 3.1
6.1
EPSS
0.0%
CVE-2025-66592 MEDIUM PATCH This Month

Synology Active Backup for Business Agent before version 3.1.0-4967 contains an origin validation error (CWE-346) that permits local users to write arbitrary files with restricted content during the installation process, resulting in high availability impact and limited integrity compromise. The CVSS vector (AV:L/PR:N/UI:R) indicates exploitation requires local system access and user interaction - specifically, the installation must be in progress. No public exploit code has been identified and EPSS sits at 0.00%, aligning with SSVC's 'exploitation: none' assessment, indicating this is a low-urgency but legitimate local privilege abuse risk during deployment windows.

Information Disclosure Synology
NVD
CVSS 3.1
6.1
EPSS
0.0%
CVE-2025-13593 MEDIUM PATCH This Month

Arbitrary file write with restricted content in Synology ActiveProtect Agent before 1.1.0-0439 is exploitable by local users during the installation process due to an origin validation error (CWE-346). The CVSS vector (AV:L/AC:L/PR:N/UI:R) indicates a low-complexity local attack requiring user interaction - consistent with exploitation during an installation workflow - and scores high on availability impact (A:H) while integrity impact is limited (I:L), suggesting the file write can disrupt system stability despite content restrictions. No public exploit code exists and CISA SSVC rates exploitation as none with partial technical impact.

Information Disclosure Synology
NVD
CVSS 3.1
6.1
EPSS
0.0%
CVE-2026-42901 CRITICAL PATCH NO ACTION HOSTED Monitor

Privilege escalation in Microsoft Entra ID enables remote unauthenticated attackers to bypass origin validation and gain elevated privileges across tenant boundaries (scope-changed). The CVSS 10.0 rating reflects maximum impact across confidentiality, integrity, and availability with no authentication or user interaction required, though no public exploit has been identified at time of analysis and EPSS data is not provided.

Authentication Bypass Microsoft
NVD VulDB
CVSS 3.1
10.0
EPSS
0.0%
CVE-2026-46701 npm HIGH PATCH GHSA This Week

Unauthenticated cross-origin MCP tool invocation in Network-AI v5.4.4 allows a remote attacker to lure a victim to a malicious web page that silently invokes any of the 22 exposed MCP tools (including config_set, agent_spawn, blackboard_write, and token_create/revoke) against the victim's locally running MCP SSE server. The vulnerability stems from an empty default secret combined with a wildcard CORS policy, and publicly available exploit code exists in the GHSA advisory demonstrating end-to-end exploitation. No CISA KEV listing yet and EPSS data was not provided, but the published PoC and trivial attack mechanics make this a meaningful risk for any user running the default Docker deployment.

RCE Python Docker
NVD GitHub
CVSS 3.1
7.6
CVE-2026-45207 HIGH PATCH This Week

Local privilege escalation in Trend Micro Apex One and Apex One as a Service allows an authenticated low-privileged user to elevate to higher privileges by abusing an origin validation flaw in one of the agent's process protection communication mechanisms. No public exploit identified at time of analysis, but the vulnerability is companion to CVE-2026-45206 in a parallel code path, which suggests the underlying class of issue is actively being researched by Trend Micro's own team.

Privilege Escalation
NVD VulDB
CVSS 3.1
7.8
EPSS
0.0%
CVE-2026-45206 HIGH PATCH This Week

Local privilege escalation in Trend Micro Apex One and Apex One as a Service allows low-privileged attackers to elevate to higher privileges by abusing an origin validation weakness (CWE-346) in one of the agent's process protection communication mechanisms. The flaw is a sibling issue to CVE-2026-45207 affecting a different IPC channel and is reported by Trend Micro itself; no public exploit identified at time of analysis and the CVE is not on CISA KEV.

Privilege Escalation
NVD VulDB
CVSS 3.1
7.8
EPSS
0.0%
CVE-2026-34930 HIGH PATCH This Week

Local privilege escalation in Trend Micro Apex One and Apex One as a Service stems from an origin validation weakness (CWE-346) in one of the agent's process protection mechanisms, allowing a low-privileged local attacker to elevate to SYSTEM-level privileges on affected installations. The flaw was reported by Trend Micro itself and is a sibling issue to CVE-2026-34927, which affects a different process protection mechanism in the same agent. No public exploit identified at time of analysis, and the issue is not currently listed in CISA KEV.

Privilege Escalation
NVD VulDB
CVSS 3.1
7.8
EPSS
0.0%
CVE-2026-34929 HIGH PATCH This Week

Local privilege escalation in Trend Micro Apex One and Apex One as a Service agents allows an attacker with low-privileged code execution to gain elevated rights by exploiting weak origin validation in an inter-process communication channel. No public exploit identified at time of analysis, but the flaw is a sibling to CVE-2026-34927 (different IPC mechanism in the same agent) which raises the likelihood of researcher and adversary interest. Vendor patches are available for both the on-prem 2019 (14.0) line and the SaaS offering.

Privilege Escalation
NVD VulDB
CVSS 3.1
7.8
EPSS
0.0%
CVE-2026-34928 HIGH PATCH This Week

Local privilege escalation in Trend Micro Apex One and Apex One as a Service security agents allows a low-privileged attacker who already has code execution on the endpoint to elevate to higher privileges by abusing a named pipe that fails to validate the origin of incoming connections. The flaw is companion to CVE-2026-34927 (a sibling issue in a different named pipe) and currently has no public exploit identified at time of analysis, but its presence in widely-deployed endpoint security software materially raises post-compromise risk.

Privilege Escalation
NVD VulDB
CVSS 3.1
7.8
EPSS
0.0%
EPSS 0% CVSS 6.1
MEDIUM PATCH This Month

Synology Assistant before version 7.0.6-50085 exposes local users to arbitrary file write with restricted content via an origin validation error triggered during the installation process. The CVSS vector (AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H) indicates that while integrity impact is limited, availability impact is rated High - meaning an attacker can corrupt or overwrite files in ways that destabilize the system, even though the written content is constrained. No public exploit code exists and CISA has not added this to KEV; EPSS stands at 0.00%, reflecting minimal observed exploitation interest.

Information Disclosure Synology
NVD
EPSS 0% CVSS 6.1
MEDIUM PATCH This Month

Synology Active Backup for Business Agent before version 3.1.0-4967 contains an origin validation error (CWE-346) that permits local users to write arbitrary files with restricted content during the installation process, resulting in high availability impact and limited integrity compromise. The CVSS vector (AV:L/PR:N/UI:R) indicates exploitation requires local system access and user interaction - specifically, the installation must be in progress. No public exploit code has been identified and EPSS sits at 0.00%, aligning with SSVC's 'exploitation: none' assessment, indicating this is a low-urgency but legitimate local privilege abuse risk during deployment windows.

Information Disclosure Synology
NVD
EPSS 0% CVSS 6.1
MEDIUM PATCH This Month

Arbitrary file write with restricted content in Synology ActiveProtect Agent before 1.1.0-0439 is exploitable by local users during the installation process due to an origin validation error (CWE-346). The CVSS vector (AV:L/AC:L/PR:N/UI:R) indicates a low-complexity local attack requiring user interaction - consistent with exploitation during an installation workflow - and scores high on availability impact (A:H) while integrity impact is limited (I:L), suggesting the file write can disrupt system stability despite content restrictions. No public exploit code exists and CISA SSVC rates exploitation as none with partial technical impact.

Information Disclosure Synology
NVD
EPSS 0% CVSS 10.0
CRITICAL PATCH NO ACTION HOSTED Monitor

Privilege escalation in Microsoft Entra ID enables remote unauthenticated attackers to bypass origin validation and gain elevated privileges across tenant boundaries (scope-changed). The CVSS 10.0 rating reflects maximum impact across confidentiality, integrity, and availability with no authentication or user interaction required, though no public exploit has been identified at time of analysis and EPSS data is not provided.

Authentication Bypass Microsoft
NVD VulDB
CVSS 7.6
HIGH PATCH This Week

Unauthenticated cross-origin MCP tool invocation in Network-AI v5.4.4 allows a remote attacker to lure a victim to a malicious web page that silently invokes any of the 22 exposed MCP tools (including config_set, agent_spawn, blackboard_write, and token_create/revoke) against the victim's locally running MCP SSE server. The vulnerability stems from an empty default secret combined with a wildcard CORS policy, and publicly available exploit code exists in the GHSA advisory demonstrating end-to-end exploitation. No CISA KEV listing yet and EPSS data was not provided, but the published PoC and trivial attack mechanics make this a meaningful risk for any user running the default Docker deployment.

RCE Python Docker
NVD GitHub
EPSS 0% CVSS 7.8
HIGH PATCH This Week

Local privilege escalation in Trend Micro Apex One and Apex One as a Service allows an authenticated low-privileged user to elevate to higher privileges by abusing an origin validation flaw in one of the agent's process protection communication mechanisms. No public exploit identified at time of analysis, but the vulnerability is companion to CVE-2026-45206 in a parallel code path, which suggests the underlying class of issue is actively being researched by Trend Micro's own team.

Privilege Escalation
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH This Week

Local privilege escalation in Trend Micro Apex One and Apex One as a Service allows low-privileged attackers to elevate to higher privileges by abusing an origin validation weakness (CWE-346) in one of the agent's process protection communication mechanisms. The flaw is a sibling issue to CVE-2026-45207 affecting a different IPC channel and is reported by Trend Micro itself; no public exploit identified at time of analysis and the CVE is not on CISA KEV.

Privilege Escalation
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH This Week

Local privilege escalation in Trend Micro Apex One and Apex One as a Service stems from an origin validation weakness (CWE-346) in one of the agent's process protection mechanisms, allowing a low-privileged local attacker to elevate to SYSTEM-level privileges on affected installations. The flaw was reported by Trend Micro itself and is a sibling issue to CVE-2026-34927, which affects a different process protection mechanism in the same agent. No public exploit identified at time of analysis, and the issue is not currently listed in CISA KEV.

Privilege Escalation
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH This Week

Local privilege escalation in Trend Micro Apex One and Apex One as a Service agents allows an attacker with low-privileged code execution to gain elevated rights by exploiting weak origin validation in an inter-process communication channel. No public exploit identified at time of analysis, but the flaw is a sibling to CVE-2026-34927 (different IPC mechanism in the same agent) which raises the likelihood of researcher and adversary interest. Vendor patches are available for both the on-prem 2019 (14.0) line and the SaaS offering.

Privilege Escalation
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH This Week

Local privilege escalation in Trend Micro Apex One and Apex One as a Service security agents allows a low-privileged attacker who already has code execution on the endpoint to elevate to higher privileges by abusing a named pipe that fails to validate the origin of incoming connections. The flaw is companion to CVE-2026-34927 (a sibling issue in a different named pipe) and currently has no public exploit identified at time of analysis, but its presence in widely-deployed endpoint security software materially raises post-compromise risk.

Privilege Escalation
NVD VulDB

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