How severe is CVE-2021-44478?

CVE-2021-44478 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-44478 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-44478?

CVE-2021-44478 primarily affects Siemens Polarion Alm. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-44478?

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

When was CVE-2021-44478 published?

CVE-2021-44478 was published on 2022-03-08 and last updated on 2026-06-17.

CVE-2021-44478

CVE-2021-44478 is a medium-severity vulnerability in Siemens Polarion Alm with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Siemens Polarion Alm
Published: 2022-03-08
Last modified: 2026-06-17

Description

A vulnerability has been identified in Polarion ALM (All versions < V21 R2 P2), Polarion WebClient for SVN (All versions). A cross-site scripting is present due to improper neutralization of data sent to the web page through the SVN WebClient in the affected product. An attacker could exploit this to execute arbitrary code and extract sensitive information by sending a specially crafted link to users with administrator privileges.

Frequently asked questions

What is CVE-2021-44478?: A vulnerability has been identified in Polarion ALM (All versions < V21 R2 P2), Polarion WebClient for SVN (All versions). A cross-site scripting is present due to improper neutralization of data sent to the web page through the SVN WebClient in the affected product. An attacker could exploit this to execute arbitrary code and extract sensitive information by sending a specially crafted link to users with administrator privileges.
How severe is CVE-2021-44478?: CVE-2021-44478 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-44478 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-44478?: CVE-2021-44478 primarily affects Siemens Polarion Alm. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-44478?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-44478 published?: CVE-2021-44478 was published on 2022-03-08 and last updated on 2026-06-17.

References

https://cert-portal.siemens.com/productcert/pdf/ssa-562051.pdf

Affected products (5)

cpe:2.3:a:siemens:polarion_alm:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:polarion_alm:21.0:-:*:*:*:*:*:*
cpe:2.3:a:siemens:polarion_alm:21.0:r1:*:*:*:*:*:*
cpe:2.3:a:siemens:polarion_alm:21.0:r2:*:*:*:*:*:*
cpe:2.3:a:siemens:polarion_subversion_webclient:*:*:*:*:*:*:*:*

More vulnerabilities in Siemens Polarion Alm

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CVE-2024-51444 — Medium (CVSS 6.5): A vulnerability has been identified in Polarion V2310 (All versions), Polarion V2404 (All versions < V2404.4). The…
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