CVE-2025-8350

Critical

Published: 19 February 2026

Published

19 February 2026

Modified

15 April 2026

KEV Added

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Patch

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CVSS Score 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0005 14.4th percentile

Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-8350 is a critical-severity Missing Authentication for Critical Function (CWE-306) vulnerability in Gov (inferred from references). Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 14.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 AC-14 (Permitted Actions Without Identification or Authentication) and AC-3 (Access Enforcement).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190). What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

AC-14 Permitted Actions Without Identification or Authentication good match

prevent

Directly mitigates CWE-306 Missing Authentication for Critical Function by requiring identification, authorization, and review of actions performed without identification or authentication.

AC-3 Access Enforcement good match

prevent

Enforces approved authorizations to prevent authentication bypass and unauthorized execution of critical functions exploited via EAR.

SI-10 Information Input Validation partial match

prevent

Validates information inputs to mitigate HTTP response splitting by preventing injection of malicious content into HTTP responses.

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

Why these techniques?

The vulnerability allows unauthenticated attackers to bypass authentication and achieve full system compromise via exploitation of a public-facing web application (CMS), directly mapping to T1190: Exploit Public-Facing Application.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

NVD Description

Execution After Redirect (EAR), Missing Authentication for Critical Function vulnerability in Inrove Software and Internet Services BiEticaret CMS allows Authentication Bypass, HTTP Response Splitting.This issue affects BiEticaret CMS: from 2.1.13 through 19022026. NOTE: The vendor was contacted early about this…

disclosure but did not respond in any way.

Deeper analysisAI

CVE-2025-8350 is an Execution After Redirect (EAR) and Missing Authentication for Critical Function vulnerability in Inrove Software and Internet Services' BiEticaret CMS. This issue enables Authentication Bypass and HTTP Response Splitting. It affects BiEticaret CMS versions from 2.1.13 through 19022026.

Remote attackers require no privileges or user interaction to exploit this vulnerability over the network with low complexity, as indicated by its CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). Successful exploitation can result in high impacts to confidentiality, integrity, and availability, allowing attackers to bypass authentication mechanisms, manipulate HTTP responses, and potentially achieve full compromise of the affected system.

The vendor was contacted early regarding this disclosure but provided no response. Advisory details are published by the Turkish National Cyber Incident Response Center (USOM) at https://www.usom.gov.tr/bildirim/tr-26-0077. The vulnerability maps to CWE-306 (Missing Authentication for Critical Function) and CWE-698 (Execution After Redirect).