CVE-2026-8285Network attack vector

Authenticated resource exhaustion via insufficient attempt limiting

Published Jul 21, 2026 · Updated Jul 21, 2026

Improper attempt limiting in Universal Yazılım FlexCity 5.536.0 through 11052026 allows remote authenticated users to exhaust resources. The CNA record does not identify the affected authentication endpoint or the operation that allocates resources for each attempt. Network access and low-privilege authentication are required; the documented impact is reduced availability without data disclosure or modification.

CVSS severity4.3
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper attempt limiting in Universal Yazılım FlexCity 5.536.0 through 11052026 allows remote authenticated users to exhaust resources. The CNA record does not identify the affected authentication endpoint or the operation that allocates resources for each attempt. Network access and low-privilege authentication are required; the documented impact is reduced availability without data disclosure or modification.

The record

CVE
CVE-2026-8285
Published
Jul 21, 2026
Updated
Jul 21, 2026
Vendor
Universal Yazılım A.Ş.
Product
FlexCity
Classifications
CWE-307, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 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=5.536.0 <=11052026

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Universal Yazılım A.Ş. · FlexCityversion=5.536.0 <=11052026

Published CVSS scores

4.3Computer Emergency Response Team of the Republic of TurkeyCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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 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-307Improper Restriction of Excessive Authentication Attempts
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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