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CWE-476

5,863 CVEs • Abstraction: Base • Likelihood of Exploit: Medium

NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

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CVEs (5,863)

CVE
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CVSS
1Libcoap
1Libcoap
Jun 17, 2026
Nov 24, 2025
N/A· v4
4.3 MEDIUM· v3
N/A· v2
NULL pointer dereference in coap_dtls_generate_cookie() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSL_get_SSL_CTX() to ret...Show more
NULL pointer dereference in coap_dtls_generate_cookie() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSL_get_SSL_CTX() to return NULL.Show less
1Libcoap
1Libcoap
Jun 17, 2026
Nov 24, 2025
N/A· v4
4.3 MEDIUM· v3
N/A· v2
NULL pointer dereference in coap_dtls_generate_cookie() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSL_get_SSL_CTX() to ret...Show more
NULL pointer dereference in coap_dtls_generate_cookie() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSL_get_SSL_CTX() to return NULL.Show less
1Libcoap
1Libcoap
Jun 17, 2026
Nov 24, 2025
N/A· v4
7.5 HIGH· v3
N/A· v2
NULL pointer dereference in get_san_or_cn_from_cert() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted X.509 certificate that causes sk_GENERAL_NAME_value() t...Show more
NULL pointer dereference in get_san_or_cn_from_cert() in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted X.509 certificate that causes sk_GENERAL_NAME_value() to return NULL.Show less
1Libcoap
1Libcoap
Jun 17, 2026
Nov 24, 2025
N/A· v4
7.5 HIGH· v3
N/A· v2
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.
1Wazuh
1Wazuh
Oct 19, 2026
Nov 21, 2025
5.1 MEDIUM· v4
4.9 MEDIUM· v3
N/A· v2
Wazuh is a free and open source platform used for threat prevention, detection, and response. From version 3.7.0 to before 4.12.0, fim_alert() implementation does not check whether oldsum->md5 is NULL or not before deref...Show more
Wazuh is a free and open source platform used for threat prevention, detection, and response. From version 3.7.0 to before 4.12.0, fim_alert() implementation does not check whether oldsum->md5 is NULL or not before dereferencing it. A compromised agent can cause a crash of analysisd by sending a specially crafted message to the wazuh manager. This issue has been patched in version 4.12.0.Show less
1Ml Explore
1Mlx
Oct 8, 2026
Nov 21, 2025
5.5 MEDIUM· v4
7.5 HIGH· v3
N/A· v2
MLX is an array framework for machine learning on Apple silicon. Prior to version 0.29.4, there is a segmentation fault in mlx::core::load_gguf() when loading malicious GGUF files. Untrusted pointer from external gguflib...Show more
MLX is an array framework for machine learning on Apple silicon. Prior to version 0.29.4, there is a segmentation fault in mlx::core::load_gguf() when loading malicious GGUF files. Untrusted pointer from external gguflib library is dereferenced without validation, causing application crash. This issue has been patched in version 0.29.4.Show less
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-
Oct 18, 2026
Nov 20, 2025
1.9 LOW· v4
N/A· v3
N/A· v2
A bug in the filesystem traversal fallback path causes fs/diriterate/diriterate.go:Next() to overindex an empty slice when ReadDir returns nil for an empty directory, resulting in a panic (index out of range) and an appl...Show more
A bug in the filesystem traversal fallback path causes fs/diriterate/diriterate.go:Next() to overindex an empty slice when ReadDir returns nil for an empty directory, resulting in a panic (index out of range) and an application crash (denial of service) in OSV-SCALIBR.Show less
1S Itoc
1Mruby/c
Oct 19, 2026
Nov 19, 2025
4.8 MEDIUM· v4
5.5 MEDIUM· v3
1.7 LOW· v2
A security vulnerability has been detected in mrubyc up to 3.4. This impacts the function mrbc_raw_realloc of the file src/alloc.c. Such manipulation of the argument ptr leads to null pointer dereference. An attack has t...Show more
A security vulnerability has been detected in mrubyc up to 3.4. This impacts the function mrbc_raw_realloc of the file src/alloc.c. Such manipulation of the argument ptr leads to null pointer dereference. An attack has to be approached locally. The name of the patch is 009111904807b8567262036bf45297c3da8f1c87. It is advisable to implement a patch to correct this issue.Show less
1Radare
1Radare2
Jun 17, 2026
Nov 14, 2025
N/A· v4
5.5 MEDIUM· v3
N/A· v2
A NULL pointer dereference vulnerability was discovered in radare2 6.0.5 and earlier within the info() function of bin_ne.c. A crafted binary input can trigger a segmentation fault, leading to a denial of service when th...Show more
A NULL pointer dereference vulnerability was discovered in radare2 6.0.5 and earlier within the info() function of bin_ne.c. A crafted binary input can trigger a segmentation fault, leading to a denial of service when the tool processes malformed data.Show less
1Radare
1Radare2
Jun 17, 2026
Nov 14, 2025
N/A· v4
4.3 MEDIUM· v3
N/A· v2
A NULL pointer dereference vulnerability was discovered in radare2 6.0.5 and earlier within the load() function of bin_dyldcache.c. Processing a crafted file can cause a segmentation fault and crash the program.
1Airpig2011
1Iec104
Jun 17, 2026
Nov 12, 2025
N/A· v4
7.5 HIGH· v3
N/A· v2
A null pointer dereference vulnerability exists in airpig2011 IEC104 thru Commit be6d841 (2019-07-08). When multiple threads enqueue elements concurrently via IEC10X_PrioEnQueue, the function may dereference a null or fr...Show more
A null pointer dereference vulnerability exists in airpig2011 IEC104 thru Commit be6d841 (2019-07-08). When multiple threads enqueue elements concurrently via IEC10X_PrioEnQueue, the function may dereference a null or freed queue pointer, resulting in a segmentation fault and potential denial-of-service.Show less
1Intel
1Quickassist Technology
Oct 19, 2026
Nov 11, 2025
6.8 MEDIUM· v4
5.5 MEDIUM· v3
N/A· v2
Null pointer dereference for some Intel(R) QAT Windows software before version 2.6.0. within Ring 3: User Applications may allow a denial of service. System software adversary with an authenticated user combined with a l...Show more
Null pointer dereference for some Intel(R) QAT Windows software before version 2.6.0. within Ring 3: User Applications may allow a denial of service. System software adversary with an authenticated user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.Show less
1Gnu
1Libmicrohttpd
Oct 8, 2026
Nov 10, 2025
8.7 HIGH· v4
7.5 HIGH· v3
N/A· v2
NULL pointer dereference vulnerability exists in GNU libmicrohttpd v1.0.2 and earlier. The vulnerability was fixed in commit ff13abc on the master branch of the libmicrohttpd Git repository, after the v1.0.2 tag. A speci...Show more
NULL pointer dereference vulnerability exists in GNU libmicrohttpd v1.0.2 and earlier. The vulnerability was fixed in commit ff13abc on the master branch of the libmicrohttpd Git repository, after the v1.0.2 tag. A specially crafted packet sent by an attacker could cause a denial-of-service (DoS) condition.Show less
-
-
Jun 17, 2026
Nov 7, 2025
N/A· v4
5.3 MEDIUM· v3
N/A· v2
A flaw was found in FFmpeg’s ALS audio decoder, where it does not properly check for memory allocation failures. This can cause the application to crash when processing certain malformed audio files. While it does not le...Show more
A flaw was found in FFmpeg’s ALS audio decoder, where it does not properly check for memory allocation failures. This can cause the application to crash when processing certain malformed audio files. While it does not lead to data theft or system control, it can be used to disrupt services and cause a denial of service.Show less
1Qnap
1File Station
Oct 18, 2026
Nov 7, 2025
0.6 LOW· v4
6.5 MEDIUM· v3
N/A· v2
A NULL pointer dereference vulnerability has been reported to affect File Station 5. If a remote attacker gains a user account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack. We have...Show more
A NULL pointer dereference vulnerability has been reported to affect File Station 5. If a remote attacker gains a user account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack. We have already fixed the vulnerability in the following version: File Station 5 5.5.6.5018 and laterShow less
1Qnap
1File Station
Oct 18, 2026
Nov 7, 2025
1.3 LOW· v4
6.5 MEDIUM· v3
N/A· v2
A NULL pointer dereference vulnerability has been reported to affect File Station 5. If a remote attacker gains a user account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack. We have...Show more
A NULL pointer dereference vulnerability has been reported to affect File Station 5. If a remote attacker gains a user account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack. We have already fixed the vulnerability in the following version: File Station 5 5.5.6.5018 and laterShow less
1Qnap
1File Station
Oct 18, 2026
Nov 7, 2025
1.3 LOW· v4
6.5 MEDIUM· v3
N/A· v2
A NULL pointer dereference vulnerability has been reported to affect File Station 5. If a remote attacker gains a user account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack. We have...Show more
A NULL pointer dereference vulnerability has been reported to affect File Station 5. If a remote attacker gains a user account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack. We have already fixed the vulnerability in the following version: File Station 5 5.5.6.5018 and laterShow less
1Qnap
1File Station
Oct 18, 2026
Nov 7, 2025
5.3 MEDIUM· v4
6.5 MEDIUM· v3
N/A· v2
A NULL pointer dereference vulnerability has been reported to affect several product versions. If a remote attacker gains a user account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack...Show more
A NULL pointer dereference vulnerability has been reported to affect several product versions. If a remote attacker gains a user account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack. We have already fixed the vulnerability in the following version: File Station 5 5.5.6.5018 and laterShow less
1Anydesk
1Anydesk
Jun 17, 2026
Nov 6, 2025
N/A· v4
7.5 HIGH· v3
N/A· v2
An issue was discovered in AnyDesk for Windows before 9.0.5, AnyDesk for macOS before 9.0.1, AnyDesk for Linux before 7.0.0, AnyDesk for iOS before 7.1.2, and AnyDesk for Android before 8.0.0. Remote Denial of Service ca...Show more
An issue was discovered in AnyDesk for Windows before 9.0.5, AnyDesk for macOS before 9.0.1, AnyDesk for Linux before 7.0.0, AnyDesk for iOS before 7.1.2, and AnyDesk for Android before 8.0.0. Remote Denial of Service can occur because of incorrect deserialization that results in failed memory allocation and a NULL pointer dereference.Show less
1Entrouvert
1Lasso
Oct 18, 2026
Nov 5, 2025
N/A· v4
7.5 HIGH· v3
N/A· v2
A denial of service vulnerability exists in the lasso_provider_verify_saml_signature functionality of Entr'ouvert Lasso 2.5.1. A specially crafted SAML response can lead to a denial of service. An attacker can send a...Show more
A denial of service vulnerability exists in the lasso_provider_verify_saml_signature functionality of Entr'ouvert Lasso 2.5.1. A specially crafted SAML response can lead to a denial of service. An attacker can send a malformed SAML response to trigger this vulnerability.Show less