Debian/libcoap3: critical 9.8
libcoap versions up to and including 4.3.5, prior to commit 30db3ea, contain a stack-based buffer overflow in address resolution when attacker-controlled hostname data is copied into a fixed 256-byte
Action: Upgrade libcoap3 to 4.3.4-1.1+deb13u3 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 4.3.4-1.1+deb13u3 | - |
Fixed versions
| 4.3.4-1.1+deb13u3 |
Sources
- osv: DEBIAN-CVE-2025-34468#Debian:13/libcoap3
- https://security-tracker.debian.org/tracker/CVE-2025-34468
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