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Vulnerabilities CVE-2018-25236

CVE-2018-25236

Critical
Open
TLP:CLEAR

Hirschmann HiOS HiSecOS Authentication Bypass via HTTP Management

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Description

Hirschmann HiOS and HiSecOS products RSP, RSPE, RSPS, RSPL, MSP, EES, EESX, GRS, OS, RED, EAGLE contain an authentication bypass vulnerability in the HTTP(S) management module that allows unauthenticated remote attackers to gain administrative access by crafting specially formed HTTP requests. Attackers can exploit improper authentication handling to obtain the authentication status and privileges of a previously authenticated user without providing valid credentials.

Details

CVSS Score
9.8
EPSS Score
0.50%

40.6th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Confidence
90%
Published
Apr 3, 2026
Last Modified
Jul 15, 2026
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