How severe is CVE-2021-41546?

CVE-2021-41546 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-41546 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41546?

CVE-2021-41546 primarily affects Siemens Ruggedcom Rox Mx5000 Firmware. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-41546?

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-2021-41546 published?

CVE-2021-41546 was published on 2021-10-12 and last updated on 2026-06-17.

CVE-2021-41546

CVE-2021-41546 is a high-severity vulnerability in Siemens Ruggedcom Rox Mx5000 Firmware with a CVSS 3.x base score of 7.5. 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-770.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 7.8
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-770
Affected product: Siemens Ruggedcom Rox Mx5000 Firmware
Published: 2021-10-12
Last modified: 2026-06-17

Description

A vulnerability has been identified in RUGGEDCOM ROX MX5000 (All versions < V2.14.1), RUGGEDCOM ROX RX1400 (All versions < V2.14.1), RUGGEDCOM ROX RX1500 (All versions < V2.14.1), RUGGEDCOM ROX RX1501 (All versions < V2.14.1), RUGGEDCOM ROX RX1510 (All versions < V2.14.1), RUGGEDCOM ROX RX1511 (All versions < V2.14.1), RUGGEDCOM ROX RX1512 (All versions < V2.14.1), RUGGEDCOM ROX RX1524 (All versions < V2.14.1), RUGGEDCOM ROX RX1536 (All versions < V2.14.1), RUGGEDCOM ROX RX5000 (All versions < V2.14.1). Affected devices write crashdumps without checking if enough space is available on the filesystem. Once the crashdump fills the entire root filesystem, affected devices fail to boot successfully. An attacker can leverage this vulnerability to cause a permanent Denial-of-Service.

Frequently asked questions

What is CVE-2021-41546?: A vulnerability has been identified in RUGGEDCOM ROX MX5000 (All versions < V2.14.1), RUGGEDCOM ROX RX1400 (All versions < V2.14.1), RUGGEDCOM ROX RX1500 (All versions < V2.14.1), RUGGEDCOM ROX RX1501 (All versions < V2.14.1), RUGGEDCOM ROX RX1510 (All versions < V2.14.1), RUGGEDCOM ROX RX1511 (All versions < V2.14.1), RUGGEDCOM ROX RX1512 (All versions < V2.14.1), RUGGEDCOM ROX RX1524 (All versions < V2.14.1), RUGGEDCOM ROX RX1536 (All versions < V2.14.1), RUGGEDCOM ROX RX5000 (All versions < V2.14.1). Affected devices write crashdumps without checking if enough space is available on the filesystem. Once the crashdump fills the entire root filesystem, affected devices fail to boot successfully. An attacker can leverage this vulnerability to cause a permanent Denial-of-Service.
How severe is CVE-2021-41546?: CVE-2021-41546 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-41546 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41546?: CVE-2021-41546 primarily affects Siemens Ruggedcom Rox Mx5000 Firmware. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-41546?: 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-2021-41546 published?: CVE-2021-41546 was published on 2021-10-12 and last updated on 2026-06-17.

References

https://cert-portal.siemens.com/productcert/pdf/ssa-173565.pdf

Affected products (10)

cpe:2.3:o:siemens:ruggedcom_rox_mx5000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:ruggedcom_rox_rx1400_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:ruggedcom_rox_rx1500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:ruggedcom_rox_rx1501_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:ruggedcom_rox_rx1510_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:ruggedcom_rox_rx1511_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:ruggedcom_rox_rx1512_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:ruggedcom_rox_rx1524_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:ruggedcom_rox_rx1536_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:ruggedcom_rox_rx5000_firmware:*:*:*:*:*:*:*:*

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