CVE-2025-65495_CVE-2025-65495

7.5 / 10

HIGH

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

Description

Integer signedness error in tls_verify_call_back() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted TLS certificate that causes i2d_X509() to return -1 and be misused as a malloc() size parameter.

Basic Information

ID CVE-2025-65495

Source mitre

Published Nov 24, 2025 at 00:00

Modified Nov 24, 2025 at 14:41

Affected Product

Vendor n/a

Product n/a

Version n/a

Affected Versions n/a n/a n/a

CWE Classification

CWE-195

References

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    "published": "2025-11-24T00:00:00.000Z",
    "modified": "2025-11-24T14:41:15.867Z",
    "type": "cve",
    "title": "CVE-2025-65495",
    "source": "mitre",
    "references": "https://github.com/obgm/libcoap/issues/1744\nhttps://github.com/obgm/libcoap/pull/1750",
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