CVE-2025-65493

CVSS 7.5 HIGHEPSS 0.3%CWE-476

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.5EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

24 Nov 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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

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

Affected products

n/a · n/a

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References

https://github.com/obgm/libcoap/issues/1743 https://github.com/obgm/libcoap/pull/1750