PT-2025-33305 · Libcoap+1 · Libcoap+1

Irenetheitcrowd · Published 2025-08-14 · Updated 2025-09-02 · CVE-2025-50518

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions: libcoap (affected versions not specified)

Description: A use-after-free issue exists in the coap delete pdu lkd function within coap pdu.c. This occurs due to improper memory handling after a PDU object is freed, potentially leading to memory corruption or arbitrary code execution.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2025-50518

Affected Products

Debian

Libcoap

References · 13

• 🔥 https://github.com/IreneTheITCrowd/blog/blob/main/libcoap-vulnerability.md · Exploit
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-50518 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-50518 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-50518 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2025-50518 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-50518 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-50518 · Vendor Advisory
• https://github.com/obgm/libcoap/issues/1724#issuecomment-3234613482 · Note
• https://github.com/obgm/libcoap/issues/1724#issuecomment-3199631257 · Note
• https://t.me/cveNotify/134067 · Telegram Post
• ❌ https://github.com/obgm/libcoap.git · Note, Deleted
• https://twitter.com/CVEnew/status/1956654830593982812 · Twitter Post
• https://github.com/IreneTheITCrowd/blog/issues/1 · Note