CVE-2025-3945 [High] | Security Vulnerability in Niagara

Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') vulnerability in Tridium Niagara Framework on QNX, Tridium Niagara Enterprise Security on QNX allows Command Delimiters. This issue affects Niagara Framework: before 4.14.2, before 4.15.1, before 4.10.11; Niagara Enterprise Security: before 4.14.2, before 4.15.1, before 4.10.11. Tridium recommends upgrading to Niagara Framework and Enterprise Security versions 4.14.2u2, 4.15.u1, or 4.10u.11.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-03-18	0.05%	0.38%	+0.32%
2	2025-10-30	0.05%	0.05%	+0.01%
3	2025-10-18	—	0.05%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-03-18

0.05%

0.38%

+0.32%

2025-10-30

0.05%

+0.01%

2025-10-18

—

0.05%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.2	3.1	HIGH	`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H` 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:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	1.2	5.9	[email protected]
9.8	3.1	CRITICAL	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H` 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:N) No account or special rights needed—anonymous or random user is enough. 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:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	3.9	5.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.2

3.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H 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:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

1.2

5.9

[email protected]

9.8

3.1

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H 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:N): No account or special rights needed—anonymous or random user is enough.
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:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

3.9

5.9

[email protected]

Affected software / configurations for CVE-2025-3945

Vendor	Product	Version	Raw CPE
tridium	niagara	4.10u10	cpe:2.3:a:tridium:niagara:4.10u10:::::::*
tridium	niagara	4.14u1	cpe:2.3:a:tridium:niagara:4.14u1:::::::*
tridium	niagara	4.15	cpe:2.3:a:tridium:niagara:4.15:::::::*
tridium	niagara_enterprise_security	4.10u10	cpe:2.3:a:tridium:niagara_enterprise_security:4.10u10:::::::*
tridium	niagara_enterprise_security	4.14u1	cpe:2.3:a:tridium:niagara_enterprise_security:4.14u1:::::::*
tridium	niagara_enterprise_security	4.15	cpe:2.3:a:tridium:niagara_enterprise_security:4.15:::::::*

References for CVE-2025-3945

URL	Tags
https://docs.niagara-community.com/category/tech_bull	Permissions Required
https://honeywell.com/us/en/product-security#security-notices	Vendor Advisory

URL

CVE-2025-3945 | Improper Neutralization of Argument Delimiters in a Command (‘Argument Injection’)

Exploit prediction scoring system (EPSS) score for CVE-2025-3945

Common vulnerability scoring system (CVSS) metrics for CVE-2025-3945

Weakness enumeration for CVE-2025-3945

Affected software / configurations for CVE-2025-3945

References for CVE-2025-3945