How severe is CVE-2024-42384?

CVE-2024-42384 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2024-42384 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-42384?

CVE-2024-42384 affects Cesanta Mongoose. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-42384?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-42384 have an EU (EUVD) identifier?

Yes. CVE-2024-42384 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-39588.

When was CVE-2024-42384 published?

CVE-2024-42384 was published on 2024-11-18 and last updated on 2026-06-17.

CVE-2024-42384

CVE-2024-42384 is a high-severity vulnerability in Cesanta Mongoose with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-190.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-39588
Weakness: CWE-190
Affected product: Cesanta Mongoose
Published: 2024-11-18
Last modified: 2026-06-17

Description

Integer Overflow or Wraparound vulnerability in Cesanta Mongoose Web Server v7.14 allows an attacker to send an unexpected TLS packet and produce a segmentation fault on the application.

Frequently asked questions

What is CVE-2024-42384?: Integer Overflow or Wraparound vulnerability in Cesanta Mongoose Web Server v7.14 allows an attacker to send an unexpected TLS packet and produce a segmentation fault on the application.
How severe is CVE-2024-42384?: CVE-2024-42384 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2024-42384 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-42384?: CVE-2024-42384 affects Cesanta Mongoose. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-42384?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-42384 have an EU (EUVD) identifier?: Yes. CVE-2024-42384 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-39588.
When was CVE-2024-42384 published?: CVE-2024-42384 was published on 2024-11-18 and last updated on 2026-06-17.

References

https://www.nozominetworks.com/blog

Affected products (1)

cpe:2.3:a:cesanta:mongoose:*:*:*:*:*:*:*:*

More vulnerabilities in Cesanta Mongoose

CVE-2022-25299 — Critical (CVSS 9.8): This affects the package cesanta/mongoose before 7.6. The unsafe handling of file names during upload using…
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CVE-2019-19307 — Critical (CVSS 9.8): An integer overflow in parse_mqtt in mongoose.c in Cesanta Mongoose 6.16 allows an attacker to achieve remote DoS…
CVE-2019-12951 — Critical (CVSS 9.8): An issue was discovered in Mongoose before 6.15. The parse_mqtt() function in mg_mqtt.c has a critical heap-based…
CVE-2018-20356 — Critical (CVSS 9.8): An invalid read of 8 bytes due to a use-after-free vulnerability in the mg_http_free_proto_data_cgi function call in…
CVE-2018-20355 — Critical (CVSS 9.8): An invalid write of 8 bytes due to a use-after-free vulnerability in the mg_http_free_proto_data_cgi function call in…

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