CVE-2024-40494

9.8 criticalEPSS 1.2%

Critical (9.8) in keith-cullen freecoap. EPSS 1.2% chance of exploitation in the next 30 days.

Buffer Overflow in coap_msg.c in FreeCoAP allows remote attackers to execute arbitrary code or cause a denial of service (stack buffer overflow) via a crafted packet.

Severity

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 1.2% chance of exploitation in the next 30 days; higher than 67% of CVEs (scores of 2026-10-31)
CWE: CWE-120
Published: 2024-10-22
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

keith-cullen:freecoap

References

https://gist.github.com/dqp10515/e9d7d663cb89187bfe7b39bb3aeb0113
https://github.com/dqp10515/security/tree/main/FreeCoAP_bug

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