What is CVE-2025-50518?

CVE-2025-50518 is a critical-severity vulnerability in N/a, classified under Use After Free. CVSS score: 9.8/10. Published 2025-08-14.

How severe is CVE-2025-50518?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2025-50518 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Use After Free in N/a

CVE-2025-50518

A use-after-free vulnerability exists in the coap_delete_pdu_lkd function within coap_pdu.c of the libcoap library. This issue occurs due to improper handling of memory after the freeing of a PDU object, leading to potential memory corrupt…

Vulnerability class: Use-After-Free

EPSS: 0.004 (33.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

N/a — versions n/a

Weakness classification (CWE)

CWE-416 — Use After Free

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

Frequently asked questions

What is CVE-2025-50518?: CVE-2025-50518 is a critical-severity vulnerability in N/a, classified under Use After Free. CVSS score: 9.8/10. Published 2025-08-14.
How severe is CVE-2025-50518?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2025-50518 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.