CVE-2023-33477Public exploitNetwork attack vector

Authenticated source-code disclosure via unchecked configuration path

Published Jun 6, 2023 · Updated Jan 8, 2025

Missing authorization in Harmonic NSG 9000-6G allows remote authenticated users to read source code through a special path. The cgi.bin/config.exp endpoint serves its configuration file without an access-permission check, exposing interface definitions and request logic. An authenticated session and network access to the appliance are required; the disclosure has no published integrity or availability effect.

CVSS severity6.5
Medium
EPSS probability0.99%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Harmonic NSG 9000-6G allows remote authenticated users to read source code through a special path. The cgi.bin/config.exp endpoint serves its configuration file without an access-permission check, exposing interface definitions and request logic. An authenticated session and network access to the appliance are required; the disclosure has no published integrity or availability effect.

The record

CVE
CVE-2023-33477
Published
Jun 6, 2023
Updated
Jan 8, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 8, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5INCIBE-CERTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1005Data from Local System

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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