# CVE-2025-48057: icinga2: Icinga 2 is a monitoring system which checks the availability of network resources, notifies users of outages, and ge...

CVE-2025-48057 is fixed in icinga2 on 1 platform, first by DEBIAN-CVE-2025-48057, released May 27, 2025. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2025-48057
- Priority: Urgent
- CVSS: 9.8 (critical)
- EPSS: 0.0046
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 27, 2025

## Description

Icinga 2 is a monitoring system which checks the availability of network resources, notifies users of outages, and generates performance data for reporting. Prior to versions 2.12.12, 2.13.12, and 2.14.6, the VerifyCertificate() function can be tricked into incorrectly treating certificates as valid. This allows an attacker to send a malicious certificate request that is then treated as a renewal of an already existing certificate, resulting in the attacker obtaining a valid certificate that can be used to impersonate trusted nodes. This only occurs when Icinga 2 is built with OpenSSL older than version 1.1.0. This issue has been patched in versions 2.12.12, 2.13.12, and 2.14.6.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | icinga2 Debian 13.5 (trixie) | 2.14.6-1 | [DEBIAN-CVE-2025-48057](https://patchblox.com/security/data/fix/linux/debian-cve-2025-48057.md) | May 27, 2025 |
| Linux | icinga2 Debian 14 | 2.14.6-1 | [DEBIAN-CVE-2025-48057](https://patchblox.com/security/data/fix/linux/debian-cve-2025-48057.md) | May 27, 2025 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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