CVE-2025-65493

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Source
https://cve.org/CVERecord?id=CVE-2025-65493
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-65493.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-65493
Downstream
Related
Published
2025-11-24T14:15:46.743Z
Modified
2026-03-12T02:16:13.939062Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

NULL pointer dereference in src/coapopenssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS/TLS connection that triggers BIOget_data() to return NULL.

References

Affected packages

Git / github.com/obgm/libcoap

Affected ranges

Type
GIT
Repo
https://github.com/obgm/libcoap
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
e3fdcdcfbd1588754fe9dd4b754ac9397260f0f9
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "4.3.5-NA"
        }
    ]
}

Affected versions

Other
bsd-licensed
coap-lwip
coap-tinydtls
v4_1_1
v4.*
v4.1.1
v4.1.2
v4.2.0
v4.2.0-rc1
v4.2.0-rc2
v4.2.0-rc3
v4.2.0-rc4
v4.2.1
v4.3.0
v4.3.0-rc1
v4.3.0-rc2
v4.3.0-rc3
v4.3.0-rc4
v4.3.1
v4.3.1-rc1
v4.3.1-rc2
v4.3.2
v4.3.2-rc1
v4.3.2-rc2
v4.3.3
v4.3.4
v4.3.5
v4.3.5-rc1
v4.3.5-rc2
v4.3.5-rc3
v4.3.5a

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-65493.json"