CVE-2025-65498

A flaw was found in libcoap. A remote attacker can cause a denial of service via a NULL pointer dereference due to improper handling of the return values of OpenSSL functions during DTLS Datagram Transport Layer Security operations...

CVE-2025-65497

A flaw was found in libcoap. A remote attacker can cause a denial of service via a NULL pointer dereference due to improper handling of the return values of OpenSSL functions during DTLS Datagram Transport Layer Security operations...

CVE-2025-65496

A flaw was found in libcoap. A remote attacker can cause a denial of service via a NULL pointer dereference due to improper handling of the return values of OpenSSL functions during DTLS Datagram Transport Layer Security operations...

CVE-2020-36872

BACnet Test Server versions up to and including 1.01 contains a remote denial of service vulnerability in its BACnet/IP BVLC packet handling. The server fails to properly validate the BVLC Length field in incoming UDP BVLC frames on the default BACnet port 47808/udp. A remote unauthenticated...

CVE-2020-36872 BACnet Test Server 1.01 Malformed BVLC Length DoS

BACnet Test Server versions up to and including 1.01 contains a remote denial of service vulnerability in its BACnet/IP BVLC packet handling. The server fails to properly validate the BVLC Length field in incoming UDP BVLC frames on the default BACnet port 47808/udp. A remote unauthenticated...

CVE-2020-36872

CVE-2020-36872 affects BACnet Test Server versions up to and including 1.01. It has a remote denial-of-service vulnerability in BACnet/IP BVLC UDP handling caused by improper validation of the BVLC Length field on port 47808. An unauthenticated attacker can send a malformed BVLC Length value to t...

EUVD-2025-198712

NULL pointer dereference in coapdtlsgeneratecookie in src/coapopenssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSLgetSSLCTX to return NULL...

NULL Pointer Dereference

Overview Affected versions of this package are vulnerable to NULL Pointer Dereference via the coapdtlsinfocallback function when a DTLS handshake occurs and SSLgetappdata returns NULL. An attacker can cause the application to crash by initiating a specially crafted DTLS handshake. Remediation...

DEBIAN-CVE-2025-65496

NULL pointer dereference in coapdtlsgeneratecookie in src/coapopenssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSLgetSSLCTX to return NULL...

DEBIAN-CVE-2025-65501

Null pointer dereference in coapdtlsinfocallback in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a DTLS handshake where SSLgetappdata returns NULL...

UBUNTU-CVE-2025-65497

NULL pointer dereference in coapdtlsgeneratecookie in src/coapopenssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSLgetSSLCTX to return NULL...

UBUNTU-CVE-2025-65499

Array index error in tlsverifycallback in src/coapopenssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSLgetexdataX509STORECTXidx to return -1...

PT-2025-47912

Name of the Vulnerable Software and Affected Versions libcoap version 4.3.5 Description A flaw exists in libcoap that allows for a denial of service. Specifically, a NULL pointer dereference in the coap dtls generate cookie function, located in src/coap openssl.c, can be triggered by a specially...

PT-2025-47914

Name of the Vulnerable Software and Affected Versions libcoap version 4.3.5 Description A flaw exists in libcoap that allows for a denial of service. Specifically, a NULL pointer dereference in the coap dtls generate cookie function, located in src/coap openssl.c, can be triggered by a crafted DT...

PT-2025-47915

Name of the Vulnerable Software and Affected Versions libcoap version 4.3.5 Description A flaw exists in libcoap where a null pointer dereference in the coap dtls info callback function can occur. This happens during a DTLS handshake when SSL get app data returns NULL, potentially leading to a...

CVE-2025-65496

NULL pointer dereference in coapdtlsgeneratecookie in src/coapopenssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSLgetSSLCTX to return NULL...

JLSEC-2025-220 An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0

An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0. There is a potential heap-based buffer overflow and heap-based buffer over-read in DTLS if MBEDTLSSSLDTLSCONNECTIONID is enabled and MBEDTLSSSLCIDINLENMAX 2 MBEDTLSSSLCIDOUTLENMAX...

JLSEC-2025-218 An issue was discovered in Mbed TLS before 2.28.1 and 3.x before 3.2.0

An issue was discovered in Mbed TLS before 2.28.1 and 3.x before 3.2.0. In some configurations, an unauthenticated attacker can send an invalid ClientHello message to a DTLS server that causes a heap-based buffer over-read of up to 255 bytes. This can cause a server crash or possibly information...

Emerson Appleton UPSMON-PRO

RISK EVALUATION Successful exploitation of this vulnerability could allow remote attackers to execute arbitrary code on affected installations of Appleton UPSMON-PRO. 2. RECOMMENDED PRACTICES CISA recommends users take defensive measures to minimize the risk of exploitation of this...

Siemens SCALANCE and RUGGEDCOM Devices Improper Input Validation (CVE-2024-56643)

dccp: vulnerability in DCCP Datagram Congestion Control Protocol involves a memory leak in dccpfeatchangerecv where memory allocated for a new SP feature value is not freed if dccpfeatpushconfirm fails, leading to potential resource exhaustion. This plugin only works with Tenable.ot. Please visit...