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CVE-2018-25236

32
FAUCET Score

CVE-2018-25236 is a critical authentication bypass vulnerability (CVSS 9.8) affecting the HTTP(S) management module of various Hirschmann HiOS and HiSecOS products, including RSP, RSPE, MSP, EES, and EAGLE. This flaw allows unauthenticated remote attackers to gain administrative access by crafting specific HTTP requests, exploiting improper authentication handling to assume the privileges of a previously authenticated user. The attack requires no user interaction or prior authentication, leading to a complete compromise of confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code availability (Metasploit, Nuclei, ExploitDB), or significant community discussion regarding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
BeldenHirschmann HiOS
>= 0, <= 05.07, >= 0, <= 06.1.04, >= 0, <= 06.2.00CNA affecteddefault unaffected
BeldenHirschmann HiSecOS EAGLE
>= 0, <= 03.00.02CNA affecteddefault unaffected

CVSS Data

CVSS version used by this source: 4.0

9.3CRITICAL

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.50%
Probability of exploitation in next 30 days
EPSS Percentile
40.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0050 is in the 18th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

assets.belden.com / m/52ecadbb5f1b0e04/original/Security-Bulletin-Web-Server-Authentication-Bypass-HiOS-HiSecOS-Hirschmann-BSECV-2018-05.pdf
vulncheck.com / advisories/hirschmann-hios-hisecos-authentication-bypass-via-http-management