CVE-2026-17561Network attack vector

Unauthenticated code execution via undisclosed code injection

Published Jul 31, 2026 · Updated Jul 31, 2026

Code injection in Logsign SIEM before 6.4.108 allows remote attackers to execute arbitrary code through its network-facing interface. TR-CERT and Logsign have not disclosed the affected endpoint, input field, or code-generation operation that fails to neutralize untrusted input. No authentication or user interaction is required, and successful exploitation grants control over the SIEM host's data and availability.

CVSS severity9.8
Critical
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Code injection in Logsign SIEM before 6.4.108 allows remote attackers to execute arbitrary code through its network-facing interface. TR-CERT and Logsign have not disclosed the affected endpoint, input field, or code-generation operation that fails to neutralize untrusted input. No authentication or user interaction is required, and successful exploitation grants control over the SIEM host's data and availability.

The record

CVE
CVE-2026-17561
Published
Jul 31, 2026
Updated
Jul 31, 2026
Vendor
Logsign
Product
Logsign SIEM
Classifications
CWE-94, CAPEC-35, CAPEC-77, CAPEC-242
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 31, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <6.4.108

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Logsign · Logsign SIEMversion=0 <6.4.108

Published CVSS scores

9.8Computer Emergency Response Team of the Republic of TurkeyCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CAPEC-35Leverage Executable Code in Non-Executable Files
CAPEC-77Manipulating User-Controlled Variables
CAPEC-242Code Injection

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo