Is CVE-2025-15321 in the CISA KEV catalog?

No. CVE-2025-15321 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-15321?

CVE-2025-15321 has a CVSS v3 base score of 2.7 (LOW).

What is the EPSS score for CVE-2025-15321?

CVE-2025-15321 has an EPSS score of 0.24% (16th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-15321?

Upgrade tanos to 1.8.5.0227 or later.

CVE & CISA-KEV Catalog

CVE-2025-15321

LOW

2.7

CVSS v3

NVD

Description

Tanium addressed an improper input validation vulnerability in Tanium Appliance.

CWE-426 CWE-863Incorrect Authorization

How to fix

Remediation Available

tanosNVD

Affected:>= 1.8.5, < 1.8.5.0227Fixed in:1.8.5.0227CVE-2025-15321derived 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 RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.24%probability of exploitation in 30 days

16thpercentile

Low risk: more likely to be exploited than 16% of all known CVEs.

References

Vendor Advisory1

security.tanium.com

Related Vulnerabilities

Other CWE-426 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-0096	High	9.3	71%	-	-
CVE-2016-10009	High	7.3	37%	-	Fix
CVE-2016-0016	High	7.8	31%	-	-
CVE-2012-1854	High	7.8	21%	KEV	-
CVE-2018-12589	High	7.8	20%	-	-
CVE-2022-22047	High	7.8	19%	KEV	Fix

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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 2026-02-10.