Siemens Sinec Nms vulnerabilities

CVE-2026-25654 High · 8.8 CWE-639 Apr 14, 2026

Authorization Bypass Through User-Controlled Key (IDOR) in Siemens Sinec Nms

A vulnerability has been identified in SINEC NMS (All versions < V4.0 SP3). Affected products do not properly validate user authorization when processing password reset requests. This could allow an authenticated remote attacker to bypass authorization checks, leading to the ability to reset the password of any arbitrary user account.

CVE-2026-24032 High · 7.3 CWE-347 Apr 14, 2026

Improper Verification of Cryptographic Signature in Siemens Sinec Nms

A vulnerability has been identified in SINEC NMS (All versions < V4.0 SP3 with UMC). The affected application contains an authentication weakness due to insufficient validation of user identity in the UMC component. This could allow an unauthenticated remote attacker to bypass authentication and gain unauthorized access to the application. (ZDI-CAN-27564)

CVE-2026-25656 High · 7.8 CWE-427 Feb 10, 2026

Uncontrolled Search Path Element in Siemens Sinec Nms

A vulnerability has been identified in SINEC NMS (All versions < V4.0 SP3), User Management Component (UMC) (All versions < V2.15.2.1). The affected application permits improper modification of a configuration file by a low-privileged user. This could allow an attacker to load malicious DLLs, potentially leading to arbitrary code execution with SYSTEM privileges.(ZDI-CAN-28108)

CVE-2026-25655 High · 7.8 CWE-427 Feb 10, 2026

Uncontrolled Search Path Element in Siemens Sinec Nms

A vulnerability has been identified in SINEC NMS (All versions < V4.0 SP2). The affected application permits improper modification of a configuration file by a low-privileged user. This could allow an attacker to load malicious DLLs, potentially leading to arbitrary code execution with administrative privilege.(ZDI-CAN-28107)

CVE-2025-40755 High · 8.8 CWE-89 Oct 14, 2025

SQL Injection in Siemens Sinec Nms

A vulnerability has been identified in SINEC NMS (All versions < V4.0 SP1). Affected applications are vulnerable to SQL injection through getTotalAndFilterCounts endpoint. An authenticated low privileged attacker could exploit to insert data and achieve privilege escalation. (ZDI-CAN-26570)

CVE-2025-30033 High · 7.8 CWE-427 Aug 12, 2025

Uncontrolled Search Path Element in Siemens Automation License Manager V6.0

The affected setup component is vulnerable to DLL hijacking. This could allow an attacker to execute arbitrary code when a legitimate user installs an application that uses the affected setup component.

CVE-2023-44487 High · 7.5 KEV Urgent · 73 Public exploit CWE-400 Oct 10, 2023

HTTP/2 Rapid Reset Attack Vulnerability

The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.

CVE-2021-40438 Critical · 9.0 KEV Urgent · 83 Public exploit Ransomware CWE-918 Sep 16, 2021

Apache HTTP Server-Side Request Forgery (SSRF)

A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the remote user. This issue affects Apache HTTP Server 2.4.48 and earlier.

CVE-2021-3449 Medium · 5.9 CWE-476 Mar 25, 2021

NULL pointer deref in signature_algorithms processing

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j).