CVE-2025-15321 | Tanium addressed an improper input validation vulnerability in Tanium Appliance.

Tanium addressed an improper input validation vulnerability in Tanium Appliance.

Published: 2026-02-05 Last update: 2026-02-10 Assigner: 3938794e-25f5-4123-a1ba-5cbd7f104512 Source: 3938794e-25f5-4123-a1ba-5cbd7f104512
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-15321 is rated Low Risk (13/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.03%). Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-15321

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-02-06 — 0.03% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-15321

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
2.7 3.1 LOW
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.2 1.4 3938794e-25f5-4123-a1ba-5cbd7f104512
2.7 3.1 LOW
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.2 1.4 [email protected]

Weakness enumeration for CVE-2025-15321

Affected software / configurations for CVE-2025-15321

Vendor Product Version Raw CPE
tanium tanos >= 1.8.3, < 1.8.3.0196 cpe:2.3:o:tanium:tanos:*:*:*:*:*:*:*:*
tanium tanos >= 1.8.4, < 1.8.4.0199 cpe:2.3:o:tanium:tanos:*:*:*:*:*:*:*:*
tanium tanos >= 1.8.5, < 1.8.5.0227 cpe:2.3:o:tanium:tanos:*:*:*:*:*:*:*:*

References for CVE-2025-15321

URL Tags
https://security.tanium.com/TAN-2025-024 Vendor Advisory
cvelogic Threat Intelligence