CVE-2025-59391

MEDIUM EPSS 12.9%
Published Dec 8, 20256mo ago · Modified Jun 17, 20261w ago
6.5 CVSS 3.1
Medium
Find Similar
Published Dec 8, 2025 6mo ago
Last Modified Jun 17, 2026 1w ago

Description

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.

CVSS Details

Base Score
6.5
Exploitability
3.9
Impact
2.5
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity None
Availability Low

Threat Intelligence

EPSS Exploit Probability
12.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-125 Out-of-bounds Read Memory Safety

Affected Products 1

VendorProductVersionRange
libcoaplibcoap* <4.3.5a

References 2

  • github.com https://github.com/obgm/libcoap/pull/1730
    Issue TrackingPatch
  • github.com https://github.com/obgm/libcoap/releases/tag/v4.3.5a
    Release Notes

Remediation

  • github.com https://github.com/obgm/libcoap/pull/1730
    Issue TrackingPatch