High

Privilege Escalation in HiSecOS Web Server

IdentifiersCVE-2023-7343CWE-269· Improper Privilege Management

CVE-2023-7343 is a privilege escalation vulnerability in the HiSecOS web server affecting versions 05.0.00 through 08.3.01 prior to 08.3.02. The flaw allows authenticated users assigned the operator or auditor role to escalate their privileges to the administrator role by sending specially crafted packets to the web server. Successful exploitation results in unauthorized elevation of privileges on the affected device.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows a lower-privileged authenticated user to obtain administrator-level access to the affected HiSecOS device. This can result in full administrative control over the device, including the ability to change configuration, access protected functionality and data, and perform any actions available to an administrator.

Mitigation

If you can’t patch tonight, do this now.

If immediate patching is not possible, limit access to the HiSecOS web server to only trusted administrative networks and users, minimize assignment of operator and auditor accounts, monitor for suspicious privilege changes or anomalous administrative actions, and restrict exposure of the management interface as much as operationally feasible. Specific vendor mitigation details beyond the bulletin reference are not available in the provided content.

Remediation

Patch, then assume compromise.

Upgrade the HiSecOS web server to version 08.3.02 or later, as versions prior to 08.3.02 in the affected range are vulnerable. Refer to Belden Security Bulletin BSECV-2023-06 for vendor-provided remediation guidance.

PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

ACTIVITY FEED

Recent activity

2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

2 SOURCESView more in app

cvefeed high severityNews

Apr 2, 2026

CVE-2023-7343 - Belden Industrial HiVision Arbitrary Code Execution via Malicious Project File

A privilege escalation vulnerability in the HiSecOS web server that allows users with operator or auditor roles to escalate to administrator privileges via specially crafted packets.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity1