How severe is CVE-2020-11956?

CVE-2020-11956 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-11956 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-11956?

CVE-2020-11956 primarily affects Rittal Iot Interface 3124.300. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-11956?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2020-11956 published?

CVE-2020-11956 was published on 2020-07-14 and last updated on 2026-06-17.

CVE-2020-11956

CVE-2020-11956 is a critical-severity vulnerability in Rittal Iot Interface 3124.300 with a CVSS 3.x base score of 9.8. 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-269.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-269
Affected product: Rittal Iot Interface 3124.300
Published: 2020-07-14
Last modified: 2026-06-17

Description

An issue was discovered on Rittal PDU-3C002DEC through 5.17.10 and CMCIII-PU-9333E0FB through 3.17.10 devices. There is a least privilege violation.

Frequently asked questions

What is CVE-2020-11956?: An issue was discovered on Rittal PDU-3C002DEC through 5.17.10 and CMCIII-PU-9333E0FB through 3.17.10 devices. There is a least privilege violation.
How severe is CVE-2020-11956?: CVE-2020-11956 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-11956 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-11956?: CVE-2020-11956 primarily affects Rittal Iot Interface 3124.300. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-11956?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-11956 published?: CVE-2020-11956 was published on 2020-07-14 and last updated on 2026-06-17.

References

https://sec-consult.com/en/blog/advisories/multiple-critical-vulnerabilities-in-multiple-rittal-products-based-on-same-software/

Affected products (5)

cpe:2.3:o:rittal:cmciii-pu-9333e0fb_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:rittal:pdu-3c002dec_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:rittal:cmc_iii_pu_7030.000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:rittal:lcp-cw_firmware:*:*:*:*:*:*:*:*
cpe:2.3:a:rittal:iot_interface_3124.300:*:*:*:*:*:*:*:*

More vulnerabilities in Rittal Iot Interface 3124.300

CVE-2020-11951 — Critical (CVSS 9.8): An issue was discovered on Rittal PDU-3C002DEC through 5.17.10 and CMCIII-PU-9333E0FB through 3.17.10 devices. There is…
CVE-2020-11955 — High (CVSS 8.8): An issue was discovered on Rittal PDU-3C002DEC through 5.15.70 and CMCIII-PU-9333E0FB through 3.15.70 devices. There…
CVE-2020-11953 — High (CVSS 8.8): An issue was discovered on Rittal PDU-3C002DEC through 5.15.40 and CMCIII-PU-9333E0FB through 3.15.70_4 devices.…
CVE-2020-11952 — Medium (CVSS 6.2): An issue was discovered on Rittal PDU-3C002DEC through 5.17.10 and CMCIII-PU-9333E0FB through 3.17.10 devices.…

All CVEs affecting Rittal Iot Interface 3124.300 →

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