CVE-2023-4934Network attack vector

Authenticated authorization bypass via user-controlled key

Published Sep 27, 2023 · Updated May 21, 2026

Authorization bypass in Usta Bilgi Sistemleri AYBS Interactive before 1.0.3 allows remote authenticated users to access protected resources. The published record identifies a user-controlled key as the authorization failure but does not disclose the affected endpoint, key, or missing ownership check. Low-privilege application access and network reachability are required; the record reports confidentiality, integrity, and availability impact without specifying the resulting operations.

CVSS severity8.8
High
EPSS probability0.95%
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 Usta Bilgi Sistemleri AYBS Interactive before 1.0.3 allows remote authenticated users to access protected resources. The published record identifies a user-controlled key as the authorization failure but does not disclose the affected endpoint, key, or missing ownership check. Low-privilege application access and network reachability are required; the record reports confidentiality, integrity, and availability impact without specifying the resulting operations.

The record

CVE
CVE-2023-4934
Published
Sep 27, 2023
Updated
May 21, 2026
Vendor
Usta Bilgi Sistemleri
Product
AYBS Interactive
Classifications
CWE-639, CAPEC-114, CAPEC-115
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 27, 2023CVE publishedPublication date reported by the CVE source.
  2. May 21, 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 <1.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Usta Bilgi Sistemleri · AYBS Interactiveversion=0 <1.0.3

Published CVSS scores

8.8Computer Emergency Response Team of the Republic of TurkeyCVSS:3.1/AV:N/AC:L/PR:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
CAPEC-114Authentication Abuse
CAPEC-115Authentication Bypass

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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