CVE-2016-9565

Status: ModifiedCritical (9.8)—Exploit

Severity9.8Critical · CVSS 3.0

Exploitation probability23 %higher than 98% of CVEs

Active exploitationNonot in the CISA catalog

Public exploitAvailablePublished on Exploit-DB

MagpieRSS, as used in the front-end component in Nagios Core before 4.2.2 might allow remote attackers to read or write to arbitrary files by spoofing a crafted response from the Nagios RSS feed server. NOTE: this vulnerability exists because of an incomplete fix for CVE-2008-4796.

CVSS

Base score: 9.8
Version: 3.0
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 23 %
Percentile among all scored CVEs: 98
Score date: 10/28/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

Published on Exploit-DB · Nagios < 4.2.2 - Arbitrary Code Execution (12/15/2016)

Affected technologies (1)

Nagios — Nagios

CWEs

CWE-284

References

Show 32 references

Raw JSON (NVD)

Show

{
  "id": "CVE-2016-9565",
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      "description": [
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  "descriptions": [
    {
      "lang": "en",
      "value": "MagpieRSS, as used in the front-end component in Nagios Core before 4.2.2 might allow remote attackers to read or write to arbitrary files by spoofing a crafted response from the Nagios RSS feed server.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2008-4796."
    },
    {
      "lang": "es",
      "value": "MagpieRSS, como es usado en el componente front-end en Nagios Core en versiones anteriores a 4.2.2 podría permitir a atacantes remotos leer o escribir archivos arbitrarios falsificando una respuesta manipulada del servidor de alimentación Nagios RSS. NOTA: esta vulnerabilidad existe debido a una incompleta reparación de CVE-2008-4796."
    }
  ],
  "lastModified": "2026-06-17T00:56:15.123",
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    {
      "nodes": [
        {
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}