CVE-2023-30350Public exploitNetwork attack vector

Guest-to-administrator escalation via fixed enable password

Published May 28, 2023 · Updated Jan 14, 2025

Privilege escalation in FS S3900-24T4S devices allows remote authenticated users with guest access to reset the administrator password. The Telnet service accepts a guest session, then permits enable mode with the fixed password super and the command username admin nopassword. Guest credentials and network access to Telnet are required; exploitation removes the administrator password and grants configuration control.

CVSS severity8.8
High
EPSS probability5.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in FS S3900-24T4S devices allows remote authenticated users with guest access to reset the administrator password. The Telnet service accepts a guest session, then permits enable mode with the fixed password super and the command username admin nopassword. Guest credentials and network access to Telnet are required; exploitation removes the administrator password and grants configuration control.

The record

CVE
CVE-2023-30350
Published
May 28, 2023
Updated
Jan 14, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1068, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 28, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 14, 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

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

T1068Exploitation for Privilege Escalation
T1098Account Manipulation

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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