How severe is CVE-2019-18337?

CVE-2019-18337 has a CVSS 3.x base score of 9.8, 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-2019-18337 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-18337?

CVE-2019-18337 primarily affects Siemens Sinvr 3 Central Control Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-18337?

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.

When was CVE-2019-18337 published?

CVE-2019-18337 was published on 2019-12-12 and last updated on 2026-06-17.

CVE-2019-18337

CVE-2019-18337 is a critical-severity vulnerability in Siemens Sinvr 3 Central Control Server with a CVSS 3.x base score of 9.8. 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-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 5.0
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Siemens Sinvr 3 Central Control Server
Published: 2019-12-12
Last modified: 2026-06-17

Description

A vulnerability has been identified in Control Center Server (CCS) (All versions < V1.5.0). The Control Center Server (CCS) contains an authentication bypass vulnerability in its XML-based communication protocol as provided by default on ports 5444/tcp and 5440/tcp. A remote attacker with network access to the CCS server could exploit this vulnerability to read the CCS users database, including the passwords of all users in obfuscated cleartext.

Frequently asked questions

What is CVE-2019-18337?: A vulnerability has been identified in Control Center Server (CCS) (All versions < V1.5.0). The Control Center Server (CCS) contains an authentication bypass vulnerability in its XML-based communication protocol as provided by default on ports 5444/tcp and 5440/tcp. A remote attacker with network access to the CCS server could exploit this vulnerability to read the CCS users database, including the passwords of all users in obfuscated cleartext.
How severe is CVE-2019-18337?: CVE-2019-18337 has a CVSS 3.x base score of 9.8, 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-2019-18337 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-18337?: CVE-2019-18337 primarily affects Siemens Sinvr 3 Central Control Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-18337?: 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.
When was CVE-2019-18337 published?: CVE-2019-18337 was published on 2019-12-12 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:siemens:sinvr_3_central_control_server:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:sinvr_3_video_server:*:*:*:*:*:*:*:*

More vulnerabilities in Siemens Sinvr 3 Central Control Server

CVE-2019-18339 — Critical (CVSS 9.8): A vulnerability has been identified in SiNVR/SiVMS Video Server (All versions < V5.0.0). The HTTP service (default port…
CVE-2019-19292 — High (CVSS 8.8): A vulnerability has been identified in Control Center Server (CCS) (All versions < V1.5.0). The Control Center Server…
CVE-2019-18338 — High (CVSS 7.7): A vulnerability has been identified in Control Center Server (CCS) (All versions < V1.5.0). The Control Center Server…
CVE-2019-19297 — High (CVSS 7.5): A vulnerability has been identified in SiNVR/SiVMS Video Server (All versions < V5.0.0). The streaming service (default…
CVE-2019-19296 — Medium (CVSS 6.8): A vulnerability has been identified in SiNVR/SiVMS Video Server (All versions < V5.0.0). The two FTP services (default…
CVE-2019-19290 — Medium (CVSS 6.5): A vulnerability has been identified in Control Center Server (CCS) (All versions < V1.5.0). The DOWNLOADS section in…

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