CVE-2024-23615Network attack vector

Unauthenticated root code execution via stack overflow

Published Jan 25, 2024 · Updated May 29, 2025

Stack buffer overflow in libdec2lha.so in Symantec Messaging Gateway 10.5 and earlier allows remote attackers to execute code as root. Public advisories identify the affected LHA-decoding library but do not disclose the vulnerable function or unchecked operation. Anonymous network access to a listening service is sufficient; successful exploitation grants root-level control of the appliance.

CVSS severity10.0
Critical
EPSS probability1.88%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack buffer overflow in libdec2lha.so in Symantec Messaging Gateway 10.5 and earlier allows remote attackers to execute code as root. Public advisories identify the affected LHA-decoding library but do not disclose the vulnerable function or unchecked operation. Anonymous network access to a listening service is sufficient; successful exploitation grants root-level control of the appliance.

The record

CVE
CVE-2024-23615
Published
Jan 25, 2024
Updated
May 29, 2025
Vendor
Symantec
Product
Symantec Messaging Gateway
Classifications
CWE-119, CWE-120, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 25, 2024CVE publishedPublication date reported by the CVE source.
  2. May 29, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <=10.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Symantec · Symantec Messaging Gatewayversion=0 <=10.5

Published CVSS scores

9.8NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0Exodus IntelligenceAV:N/AC:L/Au:N/C:C/I:C/A:C
10.0Exodus IntelligenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
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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