How severe is CVE-2021-47858?

CVE-2021-47858 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-47858 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2021-47858?

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.

Does CVE-2021-47858 have an EU (EUVD) identifier?

Yes. CVE-2021-47858 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3641.

When was CVE-2021-47858 published?

CVE-2021-47858 was published on 2026-01-21 and last updated on 2026-06-17.

CVE-2021-47858

CVE-2021-47858 is a high-severity vulnerability with a CVSS 3.x base score of 7.2. 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-79.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v4: 5.1
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-3641
Weakness: CWE-79
Published: 2026-01-21
Last modified: 2026-06-17

Description

Genexis Platinum-4410 P4410-V2-1.31A contains a stored cross-site scripting vulnerability in the 'start_addr' parameter of the Security Management interface. Attackers can inject malicious scripts through the start source address field that will persist and trigger for privileged users when they access the security management page.

Frequently asked questions

What is CVE-2021-47858?: Genexis Platinum-4410 P4410-V2-1.31A contains a stored cross-site scripting vulnerability in the 'start_addr' parameter of the Security Management interface. Attackers can inject malicious scripts through the start source address field that will persist and trigger for privileged users when they access the security management page.
How severe is CVE-2021-47858?: CVE-2021-47858 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-47858 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2021-47858?: 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.
Does CVE-2021-47858 have an EU (EUVD) identifier?: Yes. CVE-2021-47858 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3641.
When was CVE-2021-47858 published?: CVE-2021-47858 was published on 2026-01-21 and last updated on 2026-06-17.

References

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