How severe is CVE-2025-40818?

CVE-2025-40818 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2025-40818 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-40818?

CVE-2025-40818 primarily affects Siemens Sinema Remote Connect Server. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-40818?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-40818 have an EU (EUVD) identifier?

Yes. CVE-2025-40818 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201925.

When was CVE-2025-40818 published?

CVE-2025-40818 was published on 2025-12-09 and last updated on 2026-06-17.

CVE-2025-40818

CVE-2025-40818 is a low-severity vulnerability in Siemens Sinema Remote Connect Server with a CVSS 3.x base score of 3.3. 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-732.

Key facts

Severity: Low (CVSS 3.x base score 3.3)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-201925
Weakness: CWE-732
Affected product: Siemens Sinema Remote Connect Server
Published: 2025-12-09
Last modified: 2026-06-17

Description

A vulnerability has been identified in SINEMA Remote Connect Server (All versions < V3.2 SP4). Affected applications contain private SSL/TLS keys on the server that are not properly protected allowing any user with server access to read these keys. This could allow an authenticated attacker to impersonate the server potentially enabling man-in-the-middle, traffic decryption or unauthorized access to services that trust these certificates.

Frequently asked questions

What is CVE-2025-40818?: A vulnerability has been identified in SINEMA Remote Connect Server (All versions < V3.2 SP4). Affected applications contain private SSL/TLS keys on the server that are not properly protected allowing any user with server access to read these keys. This could allow an authenticated attacker to impersonate the server potentially enabling man-in-the-middle, traffic decryption or unauthorized access to services that trust these certificates.
How severe is CVE-2025-40818?: CVE-2025-40818 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2025-40818 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-40818?: CVE-2025-40818 primarily affects Siemens Sinema Remote Connect Server. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-40818?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-40818 have an EU (EUVD) identifier?: Yes. CVE-2025-40818 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201925.
When was CVE-2025-40818 published?: CVE-2025-40818 was published on 2025-12-09 and last updated on 2026-06-17.

References

https://cert-portal.siemens.com/productcert/html/ssa-626856.html

Affected products (4)

cpe:2.3:a:siemens:sinema_remote_connect_server:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:sinema_remote_connect_server:3.2:sp1:*:*:*:*:*:*
cpe:2.3:a:siemens:sinema_remote_connect_server:3.2:sp2:*:*:*:*:*:*
cpe:2.3:a:siemens:sinema_remote_connect_server:3.2:sp3:*:*:*:*:*:*

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