CVE-2024-42389Network attack vector

Heap-memory disclosure via malformed TLS packets

Published Nov 18, 2024 · Updated Nov 18, 2024

Out-of-range pointer use in Cesanta Mongoose 7.14 allows remote attackers to read unintended heap memory through a malformed TLS packet. Public records identify the TLS packet handler as the affected locus but do not disclose the function or unchecked offset calculation. No authentication or user interaction is required; impact is limited to heap-memory disclosure, with no reported write or service interruption.

CVSS severity5.3
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-range pointer use in Cesanta Mongoose 7.14 allows remote attackers to read unintended heap memory through a malformed TLS packet. Public records identify the TLS packet handler as the affected locus but do not disclose the function or unchecked offset calculation. No authentication or user interaction is required; impact is limited to heap-memory disclosure, with no reported write or service interruption.

The record

CVE
CVE-2024-42389
Published
Nov 18, 2024
Updated
Nov 18, 2024
Vendor
Cesanta
Product
Mongoose
Classifications
CWE-823
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 18, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 18, 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=0 <=7.14
  2. Affected versionversion=0 <=7.1.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Cesanta · Mongooseversion=0 <=7.14; version=0 <=7.1.4

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3Nozomi NetworksCVSS: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.

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-823Use of Out-of-range Pointer Offset

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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