How severe is CVE-2021-41543?

CVE-2021-41543 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-41543 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-2021-41543?

CVE-2021-41543 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-2021-41543?

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

When was CVE-2021-41543 published?

CVE-2021-41543 was published on 2022-03-08 and last updated on 2026-06-17.

CVE-2021-41543

CVE-2021-41543 is a medium-severity vulnerability in Siemens Climatix Pol909 Firmware with a CVSS 3.x base score of 6.5. 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-532.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-532
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 handling of log files in the web application of affected devices contains an information disclosure vulnerability which could allow logged in users to access sensitive files.

Frequently asked questions

What is CVE-2021-41543?: A vulnerability has been identified in Climatix POL909 (AWB module) (All versions < V11.44), Climatix POL909 (AWM module) (All versions < V11.36). The handling of log files in the web application of affected devices contains an information disclosure vulnerability which could allow logged in users to access sensitive files.
How severe is CVE-2021-41543?: CVE-2021-41543 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-41543 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-2021-41543?: CVE-2021-41543 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-2021-41543?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-41543 published?: CVE-2021-41543 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-2021-41542 — Medium (CVSS 6.1): A vulnerability has been identified in Climatix POL909 (AWB module) (All versions < V11.44), Climatix POL909 (AWM…
CVE-2021-41541 — 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)…

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