libcoap security advisories
2 threat alerts tracking vulnerabilities and security advisories that affect libcoap products.
Vulnios monitors libcoap CVE feeds, vendor advisories, CISA KEV listings, and exploit-prediction data continuously. Each alert below is enriched with severity, exploitation status, affected products, and a remediation path. Use this page to scan recent libcoap security news in one place, or click into an individual alert for full detail.
Critical Vulnerability: CVE-2025-34468 — libcoap — libcoap
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
criticalCVE-2025-34468Critical Vulnerability: CVE-2026-29013 — libcoap — libcoap
libcoap contains out-of-bounds read vulnerabilities in OSCORE Appendix B.2 CBOR unwrap handling where get_byte_inc() in src/oscore/oscore_cbor.c relies solely on assert() for bounds checking, which is
criticalCVE-2026-29013
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