How severe is CVE-2025-26389?

CVE-2025-26389 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-26389 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-26389?

CVE-2025-26389 primarily affects Siemens Ozw672 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-26389?

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

Does CVE-2025-26389 have an EU (EUVD) identifier?

Yes. CVE-2025-26389 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-14849.

When was CVE-2025-26389 published?

CVE-2025-26389 was published on 2025-05-13 and last updated on 2026-06-17.

CVE-2025-26389

CVE-2025-26389 is a critical-severity vulnerability in Siemens Ozw672 Firmware with a CVSS 3.x base score of 10.0. 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-78.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
CVSS v4: 10.0
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-14849
Weakness: CWE-78
Affected product: Siemens Ozw672 Firmware
Published: 2025-05-13
Last modified: 2026-06-17

Description

A vulnerability has been identified in OZW672 (All versions < V8.0), OZW772 (All versions < V8.0). The web service in affected devices does not sanitize the input parameters required for the `exportDiagramPage` endpoint. This could allow an unauthenticated remote attacker to execute arbitrary code with root privileges.

Frequently asked questions

What is CVE-2025-26389?: A vulnerability has been identified in OZW672 (All versions < V8.0), OZW772 (All versions < V8.0). The web service in affected devices does not sanitize the input parameters required for the `exportDiagramPage` endpoint. This could allow an unauthenticated remote attacker to execute arbitrary code with root privileges.
How severe is CVE-2025-26389?: CVE-2025-26389 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-26389 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-26389?: CVE-2025-26389 primarily affects Siemens Ozw672 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-26389?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-26389 have an EU (EUVD) identifier?: Yes. CVE-2025-26389 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-14849.
When was CVE-2025-26389 published?: CVE-2025-26389 was published on 2025-05-13 and last updated on 2026-06-17.

References

https://cert-portal.siemens.com/productcert/html/ssa-047424.html

Affected products (2)

cpe:2.3:o:siemens:ozw672_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:ozw772_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Siemens Ozw672 Firmware

CVE-2025-26390 — Critical (CVSS 9.8): A vulnerability has been identified in OZW672 (All versions < V6.0), OZW772 (All versions < V6.0). The web service of…
CVE-2019-13941 — High (CVSS 7.5): A vulnerability has been identified in OZW672 (All versions < V10.00), OZW772 (All versions < V10.00). Vulnerable…
CVE-2017-6873 — High (CVSS 7.4): A vulnerability was discovered in Siemens OZW672 (all versions) and OZW772 (all versions) that could allow an attacker…
CVE-2024-36140 — Medium (CVSS 6.8): A vulnerability has been identified in OZW672 (All versions < V5.2), OZW772 (All versions < V5.2). The user accounts…
CVE-2017-6872 — Medium (CVSS 6.5): A vulnerability was discovered in Siemens OZW672 (all versions) and OZW772 (all versions) that could allow an attacker…
CVE-2016-1488 — Medium (CVSS 6.1): Cross-site scripting (XSS) vulnerability in the login form in the integrated web server on Siemens OZW OZW672 devices…

All CVEs affecting Siemens Ozw672 Firmware →

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