CVE-2024-40494
Buffer Overflow in coap_msg.c in FreeCoAP allows remote attackers to execute arbitrary code or...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2024-40494- 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 - Weakness
- CWE-120
- Updated
- 2026-11-02
EUVDEUVD-2024-38481
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.
- Record
EUVD-2024-38481- 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 - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-h9p7-c5rq-hwjj
Buffer Overflow in coap_msg.c in FreeCoAP allows remote attackers to execute arbitrary code or...
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.
- Record
GHSA-h9p7-c5rq-hwjj- 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 - Weakness
- CWE-120
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2024-40494- 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 - Weakness
- CWE-120
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2024-40494- 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 - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2024-40494 is a critical vulnerability (CVSS 9.8) in Keith-cullen Freecoap, published October 22, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.17%, the 67th percentile. No source names a fixed version.