Nagios XI up to 2026R1.0 Application File permission assignment

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Nagios XI up to 2026R1.0. Affected by this vulnerability is an unknown functionality of the component Application File Handler. Executing a manipulation can lead to permission assignment. This vulnerability is tracked as CVE-2025-34288. The attack can be launched remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical was found in Nagios XI up to 2026R1.0. This vulnerability affects an unknown function of the component Application File Handler. The manipulation with an unknown input leads to a permission assignment vulnerability. The CWE definition for the vulnerability is CWE-732. The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Nagios XI versions prior to 2026R1.1 are vulnerable to local privilege escalation due to an unsafe interaction between sudo permissions and application file permissions. A user‑accessible maintenance script may be executed as root via sudo and includes an application file that is writable by a lower‑privileged user. A local attacker with access to the application account can modify this file to introduce malicious code, which is then executed with elevated privileges when the script is run. Successful exploitation results in arbitrary code execution as the root user.

The weakness was disclosed by M. Cory Billington. The advisory is shared for download at nagios.com. This vulnerability was named CVE-2025-34288 since 04/15/2025. The exploitation appears to be easy. The attack can be initiated remotely. Additional levels of successful authentication are required for exploitation. There are neither technical details nor an exploit publicly available.

Upgrading to version 2026R1.1 eliminates this vulnerability. The upgrade is hosted for download at nagios.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-203853). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.2
VulDB Temp Score: 6.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 6.7
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Permission assignment
CWE: CWE-732 / CWE-275 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: XI 2026R1.1

Timelineinfo

04/15/2025 CVE reserved
12/17/2025 +246 days Advisory disclosed
12/17/2025 +0 days VulDB entry created
12/24/2025 +7 days VulDB entry last update

Sourcesinfo

Advisory: nagios.com
Researcher: M. Cory Billington
Status: Confirmed

CVE: CVE-2025-34288 (🔒)
GCVE (CVE): GCVE-0-2025-34288
GCVE (VulDB): GCVE-100-336952
EUVD: 🔒

Entryinfo

Created: 12/17/2025 08:30
Updated: 12/24/2025 21:02
Changes: 12/17/2025 08:30 (69), 12/24/2025 20:14 (11), 12/24/2025 21:02 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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