How severe is CVE-2021-41541?

CVE-2021-41541 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-2021-41541 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41541?

CVE-2021-41541 primarily affects Siemens Climatix Pol909 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-2021-41541?

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

When was CVE-2021-41541 published?

CVE-2021-41541 was published on 2022-03-08 and last updated on 2026-06-17.

CVE-2021-41541

CVE-2021-41541 is a medium-severity vulnerability in Siemens Climatix Pol909 Firmware 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% (42nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Siemens Climatix Pol909 Firmware
Published: 2022-03-08
Last modified: 2026-06-17

Description

A vulnerability has been identified in Climatix POL909 (AWB module) (All versions < V11.44), Climatix POL909 (AWM module) (All versions < V11.36). The Group Management page of affected devices is vulnerable to cross-site scripting (XSS). The vulnerability allows an attacker to send malicious JavaScript code which could result in hijacking of the user's cookie/session tokens, redirecting the user to a malicious webpage and performing unintended browser action.

Frequently asked questions

What is CVE-2021-41541?: A vulnerability has been identified in Climatix POL909 (AWB module) (All versions < V11.44), Climatix POL909 (AWM module) (All versions < V11.36). The Group Management page of affected devices is vulnerable to cross-site scripting (XSS). The vulnerability allows an attacker to send malicious JavaScript code which could result in hijacking of the user's cookie/session tokens, redirecting the user to a malicious webpage and performing unintended browser action.
How severe is CVE-2021-41541?: CVE-2021-41541 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-2021-41541 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41541?: CVE-2021-41541 primarily affects Siemens Climatix Pol909 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-2021-41541?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-41541 published?: CVE-2021-41541 was published on 2022-03-08 and last updated on 2026-06-17.

References

https://cert-portal.siemens.com/productcert/pdf/ssa-252466.pdf

Affected products (2)

cpe:2.3:o:siemens:climatix_pol909_firmware:*:*:*:*:advanced_web_module:*:*:*
cpe:2.3:o:siemens:climatix_pol909_firmware:*:*:*:*:advanced_web_and_bacnet_module:*:*:*

More vulnerabilities in Siemens Climatix Pol909 Firmware

CVE-2021-40366 — High (CVSS 7.4): A vulnerability has been identified in Climatix POL909 (AWB module) (All versions < V11.42), Climatix POL909 (AWM…
CVE-2021-41543 — Medium (CVSS 6.5): A vulnerability has been identified in Climatix POL909 (AWB module) (All versions < V11.44), Climatix POL909 (AWM…
CVE-2021-41542 — Medium (CVSS 6.1): A vulnerability has been identified in Climatix POL909 (AWB module) (All versions < V11.44), Climatix POL909 (AWM…
CVE-2020-7575 — Medium (CVSS 6.1): A vulnerability has been identified in Climatix POL908 (BACnet/IP module) (All versions), Climatix POL909 (AWM module)…
CVE-2020-7574 — Medium (CVSS 6.1): A vulnerability has been identified in Climatix POL908 (BACnet/IP module) (All versions), Climatix POL909 (AWM module)…

All CVEs affecting Siemens Climatix Pol909 Firmware →

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