How severe is CVE-2024-35492?

CVE-2024-35492 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-2024-35492 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2024-35492?

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-2024-35492 have an EU (EUVD) identifier?

Yes. CVE-2024-35492 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-35342.

When was CVE-2024-35492 published?

CVE-2024-35492 was published on 2024-05-29 and last updated on 2026-06-17.

CVE-2024-35492

CVE-2024-35492 is a high-severity vulnerability 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-476.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-35342
Weakness: CWE-476
Published: 2024-05-29
Last modified: 2026-06-17

Description

Cesanta Mongoose commit b316989 was discovered to contain a NULL pointer dereference via the scpy function at src/fmt.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted MQTT packet.

Frequently asked questions

What is CVE-2024-35492?: Cesanta Mongoose commit b316989 was discovered to contain a NULL pointer dereference via the scpy function at src/fmt.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted MQTT packet.
How severe is CVE-2024-35492?: CVE-2024-35492 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-2024-35492 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2024-35492?: 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-2024-35492 have an EU (EUVD) identifier?: Yes. CVE-2024-35492 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-35342.
When was CVE-2024-35492 published?: CVE-2024-35492 was published on 2024-05-29 and last updated on 2026-06-17.

References

https://github.com/zzh-newlearner/MQTT_Crash/blob/main/Mongoose_null_pointer.md

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