CVE catalog
CVE-2024-31031
libcoap3: CVE-2024-31031
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.87% · Oct 25, 2026
An issue in `coap_pdu.c` in libcoap 4.3.4 allows attackers to cause undefined behavior via a sequence of messages leading to unsigned integer overflow.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libcoap3 | sid | 4.3.5-4 | fixed |
| Debian | libcoap3 | forky | 4.3.5-4 | fixed |
| Debian | libcoap3 | trixie | 4.3.4-1.1+deb13u3 | fixed |
| Debian | libcoap3 | bookworm | 4.3.1-1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libcoap3 | source | sid | 4.3.5-1 | not yet assigned | Not reported | [1070362] |
| Debian | libcoap3 | source | forky | 4.3.5-1 | not yet assigned | Not reported | [1070362] |
| Debian | libcoap3 | source | trixie | 4.3.4-1.1+deb13u1 | not yet assigned | Not reported | [1070362] |
| Debian | libcoap3 | source | bookworm | (unfixed) | not yet assigned | Not reported | [1070362] |
Notes
[bookworm] libcoap3: Minor issue, no reverse deps in Bookworm
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.