CVE-2024-9043Network attack vector

Administrator privileges via authentication daemon crash

Published Sep 20, 2024 · Updated Sep 20, 2024

Stack-based buffer overflow in Cellopoint Secure Email Gateway 4.2.1 through 4.5.0 allows remote attackers to gain system administrator privileges. A crafted audit request sent to the web daemon is forwarded to feedbackd, overflows the authentication daemon, and crashes it. No authentication is required; the web daemon mishandles the feedbackd crash and permits the audit request to pass authentication.

CVSS severity9.8
Critical
EPSS probability1.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Cellopoint Secure Email Gateway 4.2.1 through 4.5.0 allows remote attackers to gain system administrator privileges. A crafted audit request sent to the web daemon is forwarded to feedbackd, overflows the authentication daemon, and crashes it. No authentication is required; the web daemon mishandles the feedbackd crash and permits the audit request to pass authentication.

The record

CVE
CVE-2024-9043
Published
Sep 20, 2024
Updated
Sep 20, 2024
Vendor
Cellopoint
Product
Secure Email Gateway (SEG)
Classifications
CWE-787, CWE-121, CAPEC-100, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 20, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 20, 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=4.2.1 <=4.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Cellopoint · Secure Email Gateway (SEG)version=4.2.1 <=4.5.0

Published CVSS scores

9.8TWCERT/CCCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-121Stack-based Buffer Overflow
CAPEC-100Overflow Buffers
T1190Exploit Public-Facing Application

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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