A vulnerability classified as problematic was found in Zabbix up to 7.0.27/7.4.11. This affects the function HttpRequest of the component Script Item Preprocessing. Such manipulation leads to out-of-bounds read. This vulnerability is referenced as CVE-2026-23935. It is possible to launch the attack remotely. No exploit is available. Weiterlesen
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CVE-2026-23935 | Zabbix up to 7.0.27/7.4.11 Script Item Preprocessing HttpRequest out-of-bounds
A vulnerability classified as problematic was found in Zabbix up to 7.0.27/7.4.11. This affects the function HttpRequest of the component Script Item Preprocessing. Such manipulation leads to out-of-bounds read. This vulnerability is…
SOC Incident Playbook: Vulnerability Remediation & Verification
title: Detect Exploitation - CVE-2026-23935 | Zabbix up to 7.0.27/7.4.11 Script Item Preprocessing HttpRequest out-of-bounds
id: 7263554a-2835-4e3c-a2fb-e6d125bc7308
status: experimental
description: Automatisch generierte SIEM-Erkennungsregel basierend auf CTI Intelligence
references:
- https://tsecurity.de/
author: iShareStuff CTI Automated Detection Engine
date: 2026-09-24
logsource:
category: network_connection
product: any
detection:
selection:
CommandLine|contains:
- 'exploit'
condition: selection
falsepositives:
- Legitime administrative Zugriffe oder Penetrationstests
level: high
tags:
- attack.initial_accessrule CTI_Threat_Indicator {
meta:
author = "iShareStuff CTI Automated Detection Engine"
date = "2026-09-24"
description = "YARA Signature for "
strings:
$str = "CVE-2026-23935 | Zabbix up to " ascii wide
condition:
any of them
}tsecurity.de Cognitive Threat RAG
Kognitive Analyse für identifizierte Bedrohung: Erhöhte Bedrohungslage im Bereich CVE-2026-23935 | Zabbix up to 7.0.27/7.4.... Basierend auf 368k Vektor-Korrelationen werden sofortige Isolationsmaßnahmen für betroffene Endpunkte empfohlen.
Netzwerk/Remote-Zugriff ohne Vorauthentifizierung möglich.
- 1. Perimeter-Inspektion: Relevante Portfreigaben und exponierte Endpunkte unverzüglich scannen.
- 2. Patch-Applikation: Hersteller-Hotfix einspielen oder betroffene Daemons in isolierte DMZ-Segmente überführen.
- 3. Telemetrie & EDR-Alerts: Prozessaufrufe und Child-Processes auf anomale Shell-Spawns überwachen.
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