CVE-2024-30480Network attack vector

Unauthenticated maintenance-mode bypass via IP spoofing

Published May 17, 2024 · Updated Apr 28, 2026

Authentication bypass in Pippin Williamson CGC Maintenance Mode 1.2 and earlier allows remote attackers to bypass IP filtering. Published advisories identify insufficient IP-address validation but do not disclose the input or code locus. Maintenance mode and an IP allowlist must be enabled; successful spoofing reveals site content reserved for allowed addresses.

CVSS severity3.7
Low
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Pippin Williamson CGC Maintenance Mode 1.2 and earlier allows remote attackers to bypass IP filtering. Published advisories identify insufficient IP-address validation but do not disclose the input or code locus. Maintenance mode and an IP allowlist must be enabled; successful spoofing reveals site content reserved for allowed addresses.

The record

CVE
CVE-2024-30480
Published
May 17, 2024
Updated
Apr 28, 2026
Vendor
Pippin Williamson
Product
CGC Maintenance Mode
Classifications
CWE-290, CAPEC-554
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 17, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.2
  2. Affected versionversion=n/a <=1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Pippin Williamson · CGC Maintenance Modeversion=0 <=1.2; version=n/a <=1.2

Published CVSS scores

3.7PatchstackCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/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.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-290Authentication Bypass by Spoofing
CAPEC-554Functionality Bypass

Public exploit references

No public exploit references are available in this record.

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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