Is CVE-2021-25931 in the CISA KEV catalog?

No. CVE-2021-25931 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-25931?

CVE-2021-25931 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2021-25931?

CVE-2021-25931 has an EPSS score of 0.73% (50th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-25931?

Upgrade horizon to 27.1.1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-25931

HIGH

8.8

CVSS v3

NVD

Description

In OpenNMS Horizon, versions opennms-1-0-stable through opennms-27.1.0-1; OpenNMS Meridian, versions meridian-foundation-2015.1.0-1 through meridian-foundation-2019.1.18-1; meridian-foundation-2020.1.0-1 through meridian-foundation-2020.1.6-1 are vulnerable to CSRF, due to no CSRF protection at `/opennms/admin/userGroupView/users/updateUser`. This flaw allows assigning `ROLE_ADMIN` security role to a normal user. Using this flaw, an attacker can trick the admin user to assign administrator privileges to a normal user by enticing him to click upon an attacker-controlled website.

CWE-352Cross-Site Request Forgery

How to fix

Remediation Available

horizonNVD

Affected:>= 1.0, < 27.1.1Fixed in:27.1.1CVE-2021-25931derived from NVD

meridianNVD

Affected:>= 2020.1.0, < 2020.1.7Fixed in:2020.1.7CVE-2021-25931derived 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

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.73%probability of exploitation in 30 days

50thpercentile

Moderate risk: more likely to be exploited than 50% of all known CVEs.

References

Patch2

Exploit1

whitesourcesoftware.com

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 2025-04-30.