Is CVE-2021-21731 in the CISA KEV catalog?

No. CVE-2021-21731 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-21731?

CVE-2021-21731 has a CVSS v3 base score of 8.1 (HIGH).

What is the EPSS score for CVE-2021-21731?

CVE-2021-21731 has an EPSS score of 0.39% (31th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-21731?

Upgrade zxcloud irai to 6.03.04 or later.

CVE & CISA-KEV Catalog

CVE-2021-21731

HIGH

8.1

CVSS v3

NVD

Description

A CSRF vulnerability exists in the management page of a ZTE product.The vulnerability is caused because the management page does not fully verify whether the request comes from a trusted user. The attacker could submit a malicious request to the affected device to delete the data. This affects: ZXCLOUD iRAI All versions up to KVM-ProductV6.03.04

CWE-352Cross-Site Request Forgery

How to fix

Remediation Available

zxcloud iraiNVD

Affected:< 6.03.04Fixed in:6.03.04CVE-2021-21731derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

Exploit Intelligence

0.39%probability of exploitation in 30 days

31stpercentile

Low risk: more likely to be exploited than 31% of all known CVEs.

References

Vendor Advisory1

support.zte.com.cn

Related Vulnerabilities

Other CWE-352 (Cross-Site Request Forgery) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2016-6277	High	8.8	100%	KEV	-
CVE-2014-0054	Medium	6.8	91%	-	Fix
CVE-2013-6429	Medium	6.8	90%	-	Fix
CVE-2022-41622	High	8.8	88%	-	-
CVE-2018-7700	High	8.8	75%	-	-
CVE-2015-2295	Medium	6.8	66%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-01-28.