CVE-2026-17562Network attack vector

Unauthorized function access via user-controlled key

Published Aug 27, 2026 · Updated Aug 27, 2026

Authorization bypass in Zirve Güvenlik Sistemleri Adisyon.Pro before 5.21.0 allows remote attackers to access restricted functions. TR-CERT has not disclosed the affected request parameter or function; it states only that a user-controlled key bypasses an ACL constraint. The network-reachable flaw requires no authentication or user interaction and permits unauthorized operations with limited service impact.

CVSS severity6.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Zirve Güvenlik Sistemleri Adisyon.Pro before 5.21.0 allows remote attackers to access restricted functions. TR-CERT has not disclosed the affected request parameter or function; it states only that a user-controlled key bypasses an ACL constraint. The network-reachable flaw requires no authentication or user interaction and permits unauthorized operations with limited service impact.

The record

CVE
CVE-2026-17562
Published
Aug 27, 2026
Updated
Aug 27, 2026
Vendor
Zirve Güvenlik Sistemleri
Product
Adisyon.Pro
Classifications
CWE-639, CAPEC-1
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=0 <v5.21.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Zirve Güvenlik Sistemleri · Adisyon.Proversion=0 <v5.21.0

Published CVSS scores

6.5TR-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
CAPEC-1Accessing Functionality Not Properly Constrained by ACLs

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

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Your stack

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