SecuriTricks - CVE-2025-59391

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.

Product(s) Impacted

Vendor	Product	Versions
Libcoap	Libcoap	<4.3.5

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-125

Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	libcoap	libcoap	<4.3.5	/	/	/	/	/	/	/

References

https://github.com/obgm/libcoap/pull/1730

https://github.com/obgm/libcoap/releases/tag/v4.3.5a

CVSS Score

6.5 / 10

CVSS Data - 3.1

Attack Vector: NETWORK
Attack Complexity: LOW
Privileges Required: NONE
Scope: UNCHANGED
Confidentiality Impact: LOW
Integrity Impact: NONE
Availability Impact: LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

View Vector String

Timeline

Published: Dec. 8, 2025, 5:16 p.m.
Last Modified: Dec. 8, 2025, 6:26 p.m.

Status : Awaiting Analysis

CVE has been marked for Analysis. Normally once in this state the CVE will be analyzed by NVD staff within 24 hours.

More info

Source

cve@mitre.org

CVE-2025-59391