# CVE-2024-46304: libcoap3: A NULL pointer dereference in libcoap v4.3.5-rc2 and below allows a remote attacker to cause a denial of service via...

CVE-2024-46304 is fixed in libcoap3 on 1 platform by DEBIAN-CVE-2024-46304 (version 4.3.5-1), released October 9, 2024. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2024-46304
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0056
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 9, 2024

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libcoap3 Debian 14 | 4.3.5-1 | [DEBIAN-CVE-2024-46304](https://patchblox.com/security/data/fix/linux/debian-cve-2024-46304.md) | Oct 9, 2024 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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