How severe is CVE-2020-15789?

CVE-2020-15789 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2020-15789 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-15789?

CVE-2020-15789 affects Siemens Polarion Subversion Webclient. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-15789?

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.

When was CVE-2020-15789 published?

CVE-2020-15789 was published on 2020-09-09 and last updated on 2026-06-17.

CVE-2020-15789

CVE-2020-15789 is a high-severity vulnerability in Siemens Polarion Subversion Webclient with a CVSS 3.x base score of 8.1. 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-352.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 5.8
EPSS exploit prediction: 0% (39th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Siemens Polarion Subversion Webclient
Published: 2020-09-09
Last modified: 2026-06-17

Description

A vulnerability has been identified in Polarion Subversion Webclient (All versions). The web interface could allow a Cross-Site Request Forgery (CSRF) attack if an unsuspecting user is tricked into accessing a malicious link. Successful exploitation requires user interaction by a legitimate user, who must be authenticated to the web interface. A successful attack could allow an attacker to trigger actions via the web interface that the legitimate user is allowed to perform. This could allow the attacker to read or modify contents of the web application.

Frequently asked questions

What is CVE-2020-15789?: A vulnerability has been identified in Polarion Subversion Webclient (All versions). The web interface could allow a Cross-Site Request Forgery (CSRF) attack if an unsuspecting user is tricked into accessing a malicious link. Successful exploitation requires user interaction by a legitimate user, who must be authenticated to the web interface. A successful attack could allow an attacker to trigger actions via the web interface that the legitimate user is allowed to perform. This could allow the attacker to read or modify contents of the web application.
How severe is CVE-2020-15789?: CVE-2020-15789 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2020-15789 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-15789?: CVE-2020-15789 affects Siemens Polarion Subversion Webclient. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-15789?: 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.
When was CVE-2020-15789 published?: CVE-2020-15789 was published on 2020-09-09 and last updated on 2026-06-17.

References

https://cert-portal.siemens.com/productcert/pdf/ssa-436520.pdf

Affected products (1)

cpe:2.3:a:siemens:polarion_subversion_webclient:*:*:*:*:*:*:*:*

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