How severe is CVE-2026-25655?

CVE-2026-25655 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-25655 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-25655?

CVE-2026-25655 primarily affects Siemens Sinec Nms. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-25655?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-25655 have an EU (EUVD) identifier?

Yes. CVE-2026-25655 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6889.

When was CVE-2026-25655 published?

CVE-2026-25655 was published on 2026-02-10 and last updated on 2026-06-17.

CVE-2026-25655

CVE-2026-25655 is a high-severity vulnerability in Siemens Sinec Nms with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-427.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v4: 8.5
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-6889
Weakness: CWE-427
Affected product: Siemens Sinec Nms
Published: 2026-02-10
Last modified: 2026-06-17

Description

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)

Frequently asked questions

What is CVE-2026-25655?: 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)
How severe is CVE-2026-25655?: CVE-2026-25655 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-25655 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-25655?: CVE-2026-25655 primarily affects Siemens Sinec Nms. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-25655?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-25655 have an EU (EUVD) identifier?: Yes. CVE-2026-25655 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6889.
When was CVE-2026-25655 published?: CVE-2026-25655 was published on 2026-02-10 and last updated on 2026-06-17.

References

https://cert-portal.siemens.com/productcert/html/ssa-311973.html

Affected products (3)

cpe:2.3:a:siemens:sinec_nms:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:sinec_nms:4.0:-:*:*:*:*:*:*
cpe:2.3:a:siemens:sinec_nms:4.0:sp1:*:*:*:*:*:*

More vulnerabilities in Siemens Sinec Nms

CVE-2025-40736 — Critical (CVSS 9.8): A vulnerability has been identified in SINEC NMS (All versions < V4.0). The affected application exposes an endpoint…
CVE-2021-39275 — Critical (CVSS 9.8): ap_escape_quotes() may write beyond the end of a buffer when given malicious input. No included modules pass untrusted…
CVE-2024-41940 — Critical (CVSS 9.1): A vulnerability has been identified in SINEC NMS (All versions < V3.0). The affected application does not properly…
CVE-2021-33725 — Critical (CVSS 9.1): A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP2 Update 1). The affected system allows to…
CVE-2021-33724 — Critical (CVSS 9.1): A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP2 Update 1). The affected system contains an…
CVE-2021-40438 — Critical (CVSS 9.0): A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the remote user.…

All CVEs affecting Siemens Sinec Nms →

Other CWE-427 (Uncontrolled Search Path Element) vulnerabilities

CVE-2025-4981 — Critical (CVSS 9.9): Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to…
CVE-2025-69599 — Critical (CVSS 9.8): RayVentory Scan Engine through 12.6 Update 8 allows attackers to gain privileges if they control the value of the PATH…
CVE-2019-25268 — Critical (CVSS 9.8): NREL BEopt 2.8.0.0 contains a DLL hijacking vulnerability that allows attackers to load arbitrary libraries by tricking…
CVE-2023-53959 — Critical (CVSS 9.8): FileZilla Client 3.63.1 contains a DLL hijacking vulnerability that allows attackers to execute malicious code by…
CVE-2025-65741 — Critical (CVSS 9.8): Sublime Text 3 Build 3208 or prior for MacOS is vulnerable to Dylib Injection. An attacker could compile a .dylib file…
CVE-2024-23054 — Critical (CVSS 9.8): An issue in Plone Docker Official Image 5.2.13 (5221) open-source software that could allow for remote code execution…

Browse all CWE-427 (Uncontrolled Search Path Element) vulnerabilities →