CVE-2025-59391CWE-125

CVE-2025-59391

Medium · published December 8, 2025

CVSS v3.1
6.5
EPSS
0%
Percentile
16.8
In the wild
Unconfirmed
What it is

A memory disclosure vulnerability exists in libcoap's OSCORE configuration parser in libcoap before release-4.3.5-patches. An out-of-bounds read may occur when parsing certain configuration values, allowing an attacker to infer or read memory beyond string boundaries in the .rodata section. This could potentially lead to information disclosure or denial of service.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00261 · 16.8th percentile
Weakness
CWE-125 · Out-of-bounds Read
Published
2025-12-08T22:16Z
Affected products (1)
ProductVersionsFixed in
libcoap/libcoap< 4.3.5a4.3.5a
References (2)
https://github.com/obgm/libcoap/pull/1730 · [email protected]https://github.com/obgm/libcoap/releases/tag/v4.3.5a · [email protected]
EPSS history
Timeline
  • 08 DEC 00:00Z
    A memory disclosure vulnerability exists in libcoap's OSCORE configuration parser in libcoap before release-4.3.5-patches
    cvelistv5