How severe is CVE-2021-42371?

CVE-2021-42371 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-2021-42371 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-42371?

CVE-2021-42371 primarily affects Xorux Lpar2rrd. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-42371?

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-2021-42371 published?

CVE-2021-42371 was published on 2021-11-08 and last updated on 2026-06-17.

CVE-2021-42371

CVE-2021-42371 is a critical-severity vulnerability in Xorux Lpar2rrd 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-922.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-922
Affected product: Xorux Lpar2rrd
Published: 2021-11-08
Last modified: 2026-06-17

Description

lpar2rrd is a hardcoded system account in XoruX LPAR2RRD and STOR2RRD before 7.30.

Frequently asked questions

What is CVE-2021-42371?: lpar2rrd is a hardcoded system account in XoruX LPAR2RRD and STOR2RRD before 7.30.
How severe is CVE-2021-42371?: CVE-2021-42371 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-2021-42371 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-42371?: CVE-2021-42371 primarily affects Xorux Lpar2rrd. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-42371?: 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-2021-42371 published?: CVE-2021-42371 was published on 2021-11-08 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:xorux:lpar2rrd:*:*:*:*:*:*:*:*
cpe:2.3:a:xorux:stor2rrd:*:*:*:*:*:*:*:*

More vulnerabilities in Xorux Lpar2rrd

CVE-2020-24032 — Critical (CVSS 9.8): tz.pl on XoruX LPAR2RRD and STOR2RRD 2.70 virtual appliances allows cmd=set&tz=OS command injection via shell…
CVE-2014-4981 — Critical (CVSS 9.8): LPAR2RRD in 3.5 and earlier allows remote attackers to execute arbitrary commands due to insufficient input…
CVE-2014-4982 — Critical (CVSS 9.8): LPAR2RRD ≤ 4.53 and ≤ 3.5 has arbitrary command injection on the application server.
CVE-2025-54769 — High (CVSS 8.8): An authenticated, read-only user can upload a file and perform a directory traversal to have the uploaded file placed…
CVE-2021-42372 — High (CVSS 8.8): A shell command injection in the HW Events SNMP community in XoruX LPAR2RRD and STOR2RRD before 7.30 allows…
CVE-2021-42370 — High (CVSS 7.5): A password mismanagement situation exists in XoruX LPAR2RRD and STOR2RRD before 7.30 because cleartext information is…

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