How severe is CVE-2021-31475?

CVE-2021-31475 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-31475 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-31475?

CVE-2021-31475 affects Solarwinds Orion Job Scheduler. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-31475?

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-2021-31475 published?

CVE-2021-31475 was published on 2021-05-21 and last updated on 2026-06-17.

CVE-2021-31475

CVE-2021-31475 is a high-severity vulnerability in Solarwinds Orion Job Scheduler with a CVSS 3.x base score of 8.8. 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-732.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 6% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-732
Affected product: Solarwinds Orion Job Scheduler
Published: 2021-05-21
Last modified: 2026-06-17

Description

This vulnerability allows remote attackers to execute arbitrary code on affected installations of SolarWinds Orion Job Scheduler 2020.2.1 HF 2. Authentication is required to exploit this vulnerability. The specific flaw exists within the JobRouterService WCF service. The issue is due to the WCF service configuration, which allows a critical resource to be accessed by unprivileged users. An attacker can leverage this vulnerability to execute code in the context of an administrator. Was ZDI-CAN-12007.

Frequently asked questions

What is CVE-2021-31475?: This vulnerability allows remote attackers to execute arbitrary code on affected installations of SolarWinds Orion Job Scheduler 2020.2.1 HF 2. Authentication is required to exploit this vulnerability. The specific flaw exists within the JobRouterService WCF service. The issue is due to the WCF service configuration, which allows a critical resource to be accessed by unprivileged users. An attacker can leverage this vulnerability to execute code in the context of an administrator. Was ZDI-CAN-12007.
How severe is CVE-2021-31475?: CVE-2021-31475 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-31475 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-31475?: CVE-2021-31475 affects Solarwinds Orion Job Scheduler. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-31475?: 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-2021-31475 published?: CVE-2021-31475 was published on 2021-05-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:solarwinds:orion_job_scheduler:2020.2.1:hotfix2:*:*:*:*:*:*

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