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CVE-2025-34323— Nagios Log Server < 2026R1.0.1 Local Privilege Escalation via Writable Scripts and Sudo Rules

Quick assessment

Affected
Nagios Log Server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nagios Log Server是美国Nagios公司的一套集中式日志管理、监控和分析软件。 Nagios Log Server 2026R1.0.1之前版本存在安全漏洞，该漏洞源于sudo规则和文件系统权限之间存在不安全交互，可能导致本地权限提升。

AI Predicted 7.8 Difficulty: Easy EPSS 0.33% · P23

Affected Version Matrix 1

VendorProduct Version RangeStatus
Nagios Log Server < 2026R1.0.1 affected
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I. Basic Information for CVE-2025-34323

Vulnerability Information
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Vulnerability Title
Nagios Log Server < 2026R1.0.1 Local Privilege Escalation via Writable Scripts and Sudo Rules
Source: CVE Program / CVE List V5
Vulnerability Description
Nagios Log Server versions prior to 2026R1.0.1 are vulnerable to local privilege escalation due to a combination of sudo misconfiguration and group-writable application directories. The 'www-data' user is a member of the 'nagios' group, which has write access to '/usr/local/nagioslogserver/scripts', while several scripts in this directory are owned by root and may be executed via sudo without a password. A local attacker running as 'www-data' can move one of these root-owned scripts to a backup name and create a replacement script with attacker-controlled content at the original path, then invoke it with sudo. This allows arbitrary commands to be executed with root privileges, providing full compromise of the underlying operating system.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键资源的不正确权限授予
Source: CVE Program / CVE List V5
Vulnerability Title
Nagios Log Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nagios Log Server是美国Nagios公司的一套集中式日志管理、监控和分析软件。 Nagios Log Server 2026R1.0.1之前版本存在安全漏洞，该漏洞源于sudo规则和文件系统权限之间存在不安全交互，可能导致本地权限提升。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Nagios Log Server 0 ~ 2026R1.0.1 -

II. Public POCs for CVE-2025-34323

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III. Intelligence Information for CVE-2025-34323

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IV. Related Vulnerabilities

Same product: Log Server
Same vendor: Nagios
Same weakness: CWE-732

V. Comments for CVE-2025-34323

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