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CVE-2026-20231

CRITICAL(9.9)

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Risk Signal Score25/100 — MITTEL
  • CVSS 9.9 — Kritisch

Erwähnungen (letzte 60 Tage)

Artikel

EPSS-Score

0.5%

Exploit-Wahrscheinlichkeit (30 Tage)

CVSS Score

9.9

Technische Schwere

Beschreibung

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Workload engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities.   The vulnerabilities tracked by CVE-2026-20231 are related to improper neutralization of special elements issues that are grouped under the Common Weakness Enumeration (CWE) CWE-74.

Erkennung & Indikatoren

Ausnutzung

In den geprüften Quellen nicht genannt

Threat-Hunting-Queries

CVE-2026-20231 ist eine Improper Neutralization of Special Elements (CWE-74) Schwachstelle, die Command, OS oder Argument Injection umfassen kann. Die Detektion konzentriert sich auf ungewöhnliche Prozessausführungen oder Skriptaktivitäten, die auf eine erfolgreiche Injection hindeuten könnten. Da keine spezifischen IOCs oder Exploits genannt werden, sind generische Verhaltensmuster die beste Opti

Sentinel/Defender KQL

DeviceProcessEvents
| where InitiatingProcessCommandLine contains "Secure Workload" or InitiatingProcessFileName contains "SecureWorkload"
| where FileName in ("cmd.exe", "powershell.exe", "sh", "bash", "python", "perl")
| where ProcessCommandLine contains "-c" or ProcessCommandLine contains "/c" or ProcessCommandLine contains "-exec"
| summarize count() by DeviceName, InitiatingProcessCommandLine, ProcessCommandLine, FileName

Splunk SPL

index=* (source="*Secure Workload*" OR sourcetype="*Secure Workload*")
| (process_name="cmd.exe" OR process_name="powershell.exe" OR process_name="sh" OR process_name="bash" OR process_name="python" OR process_name="perl")
| (command_line="*-c*" OR command_line="*/c*" OR command_line="*-exec*")
| stats count by host, parent_process_command_line, command_line, process_name

Sigma

title: Secure Workload Potential Injection
logsource:
  category: process_creation
  product: windows
detection:
  selection:
    ParentImage|endswith:
      - '\SecureWorkload.exe'
    Image|endswith:
      - '\cmd.exe'
      - '\powershell.exe'
      - '\sh'
      - '\bash'
      - '\python.exe'
      - '\perl.exe'
    CommandLine|contains:
      - '-c'
      - '/c'
      - '-exec'
  condition: selection
falsepositives:
  - Legitimate administrative activities (requires tuning)
level: high

Elastic ES|QL

from process where
  (process.parent.executable.full_path : "*Secure Workload*" or process.parent.name : "*Secure Workload*") and
  (process.executable.name : ("cmd.exe", "powershell.exe", "sh", "bash", "python", "perl")) and
  (process.args : ("-c", "/c", "-exec"))
| stats count() by host.name, process.parent.command_line, process.command_line, process.executable.name

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Referenzen