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CVE-2025-34277

32
FAUCET Score

CVE-2025-34277 is a critical code injection vulnerability affecting Nagios Log Server versions prior to 2024R1.3.1. An unauthenticated attacker can exploit malformed dashboard ID values to achieve arbitrary code execution within the Log Server process. This vulnerability carries a CVSS score of 9.8, indicating a severe impact with high confidentiality, integrity, and availability compromise. While no public exploits or active exploitation have been observed, and community discussion is minimal, the high FAUCET Risk Score of 87/100 underscores its potential danger.

Impacted Technologies

VendorProductVersion(s)CPE
< 2024CPE matchmatch criteria
cpe:2.3:a:nagios:log_server:*:*:*:*:*:*:*:*
2024CPE matchmatch criteria
cpe:2.3:a:nagios:log_server:2024:r1:*:*:*:*:*:*
2024CPE matchmatch criteria
cpe:2.3:a:nagios:log_server:2024:r1.0.1:*:*:*:*:*:*
2024CPE matchmatch criteria
cpe:2.3:a:nagios:log_server:2024:r1.0.2:*:*:*:*:*:*
2024CPE matchmatch criteria
cpe:2.3:a:nagios:log_server:2024:r1.1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

9.4CRITICAL

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
HIGH
SS Integrity
HIGH
SS Availability
HIGH
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
2.01%
Probability of exploitation in next 30 days
EPSS Percentile
78.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0201 is in the 68th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

nagios.com / changelog
Release Notes
nagios.com / products/security
Product
vulncheck.com / advisories/nagios-log-server-rce-via-malformed-dashboard-id
Third Party Advisory