High severity · published Apr 2, 2026
CVE-2023-7342
Belden HiSecOS Web Server Privilege Escalation
8.8
CVSS
0.3%
EPSS
No
On KEV
Description
HiSecOS web server versions 03.4.00 prior to 04.1.00 contains a privilege escalation vulnerability that allows authenticated users with operator or auditor roles to escalate privileges to the administrator role by sending specially crafted packets to the web server. Attackers can exploit this flaw to gain full administrative access to the affected device.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 18% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HH
Hirschmann HiSecOS EAGLE · Belden
03.4.00 through 04.1.00 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-7342
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-7342
vendor-advisory
https://assets.belden.com/m/4828b7cf8b652105/original/Microsoft-Word-Belden_Security_Bulletin_BSECV-2021-07_1v0-docx.pdf
third-party-advisory
https://www.vulncheck.com/advisories/belden-hisecos-web-server-privilege-escalation
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