How severe is CVE-2024-46304?

CVE-2024-46304 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-2024-46304 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2024-46304?

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-2024-46304 have an EU (EUVD) identifier?

Yes. CVE-2024-46304 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-41812.

When was CVE-2024-46304 published?

CVE-2024-46304 was published on 2024-10-09 and last updated on 2026-06-17.

CVE-2024-46304

CVE-2024-46304 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-120.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-41812
Weakness: CWE-120
Published: 2024-10-09
Last modified: 2026-06-17

Description

A NULL pointer dereference in libcoap v4.3.5-rc2 and below allows a remote attacker to cause a denial of service via the coap_handle_request_put_block function in src/coap_block.c.

Frequently asked questions

What is CVE-2024-46304?: A NULL pointer dereference in libcoap v4.3.5-rc2 and below allows a remote attacker to cause a denial of service via the coap_handle_request_put_block function in src/coap_block.c.
How severe is CVE-2024-46304?: CVE-2024-46304 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-2024-46304 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2024-46304?: 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-2024-46304 have an EU (EUVD) identifier?: Yes. CVE-2024-46304 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-41812.
When was CVE-2024-46304 published?: CVE-2024-46304 was published on 2024-10-09 and last updated on 2026-06-17.

References

https://github.com/obgm/libcoap/issues/1509

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