CVE-2024-48533Public exploitNetwork attack vector

Unauthenticated email enumeration via response discrepancy

Published Nov 20, 2024 · Updated Dec 3, 2024

Account enumeration in PPC Communications eSoft Planner 3.24.08271-USA allows remote attackers to identify valid user email accounts. The login-recovery AJAX email checker accepts a client_key exposed in the login page source and returns content for registered addresses but an empty response for unknown addresses. No authentication or CAPTCHA is required, and the disclosed result is limited to determining whether an email address belongs to an account.

CVSS severity5.3
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Account enumeration in PPC Communications eSoft Planner 3.24.08271-USA allows remote attackers to identify valid user email accounts. The login-recovery AJAX email checker accepts a client_key exposed in the login page source and returns content for registered addresses but an empty response for unknown addresses. No authentication or CAPTCHA is required, and the disclosed result is limited to determining whether an email address belongs to an account.

The record

CVE
CVE-2024-48533
Published
Nov 20, 2024
Updated
Dec 3, 2024
Vendor
PPC Communications
Product
eSoft Planner
Classifications
CWE-276, T1589.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 20, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 3, 2024Record 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=3.24.08271-USA

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

PPC Communications · eSoft Plannerversion=3.24.08271-USA

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:N/AC:L/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
T1589.002Gather Victim Identity Information: Email Addresses

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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