Description
An issue was discovered in Nagios XI before 5.9.3. The is_insecure_login_authenticated function uses a insecure timing comparison that leads to an attacker being able to bruteforce the admin password, by measuring timing differences in the comparison.
Published: 2026-09-14
Score: 3.5 Low
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 14 Sep 2026 23:30:00 +0000

Type Values Removed Values Added
Title Timing Side-Channel Enables Brute-Force Login to Nagios XI

Mon, 14 Sep 2026 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Nagios xi
Vendors & Products Nagios xi

Mon, 14 Sep 2026 04:00:00 +0000

Type Values Removed Values Added
Description An issue was discovered in Nagios XI before 5.9.3. The is_insecure_login_authenticated function uses a insecure timing comparison that leads to an attacker being able to bruteforce the admin password, by measuring timing differences in the comparison.
First Time appeared Nagios
Nagios nagios Xi
Weaknesses CWE-208
CPEs cpe:2.3:a:nagios:nagios_xi:*:*:*:*:*:*:*:*
Vendors & Products Nagios
Nagios nagios Xi
References
Metrics cvssV3_1

{'score': 3.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N'}

Subscriptions

Nagios Nagios Xi Xi
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-09-14T03:48:53.027Z

Reserved: 2023-01-21T00:00:00.000Z

Link: CVE-2023-24035

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-14T04:16:35.293

Modified: 2026-09-14T04:16:35.293

Link: CVE-2023-24035

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-14T23:15:09Z

Weaknesses
  • CWE-208

    Observable Timing Discrepancy