Heap-memory disclosure via malformed TLS packet
Published Nov 18, 2024 · Updated Sep 8, 2026
Out-of-range pointer use in Cesanta Mongoose 7.14 allows remote attackers to read unintended heap memory via a malformed TLS packet. The published advisory does not identify the TLS parser function or disclose how packet fields produce the out-of-range pointer offset. The CNA assessment requires user interaction and bounds the reported consequence to confidentiality loss without memory modification or service interruption.
Summary
What happened
Out-of-range pointer use in Cesanta Mongoose 7.14 allows remote attackers to read unintended heap memory via a malformed TLS packet. The published advisory does not identify the TLS parser function or disclose how packet fields produce the out-of-range pointer offset. The CNA assessment requires user interaction and bounds the reported consequence to confidentiality loss without memory modification or service interruption.
The record
- CVE
- CVE-2024-42391
- Published
- Nov 18, 2024
- Updated
- Sep 8, 2026
- Vendor
- Cesanta
- Product
- Mongoose
- Classifications
- CWE-823, CAPEC-129, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 18, 2024CVE publishedPublication date reported by the CVE source.
- Sep 8, 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.
- Affected versionversion=0 <=7.14
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
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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