NULL Pointer Dereference

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

CVEs (5,863)

CVE VENDORS PRODUCTS UPDATED PUBLISHED CVSS
CVE-2021-34586 2Codesys Wago 28750 8202 Firmware 750 8203 Firmware750 8204 Firmware+25 more Jun 17, 2026 Oct 26, 2021 N/A· v4 7.5 HIGH· v3 5.0 MEDIUM· v2 In the CODESYS V2 web server prior to V1.1.9.22 crafted web server requests may cause a Null pointer dereference in the CODESYS web server and may result in a denial-of-service condition.
CVE-2021-23139 1Trendmicro 3Apex One Worry Free Business SecurityWorry Free Business Security Services Jun 17, 2026 Oct 21, 2021 N/A· v4 7.5 HIGH· v3 5.0 MEDIUM· v2 A null pointer vulnerability in Trend Micro Apex One and Worry-Free Business Security 10.0 SP1 could allow an attacker to crash the CGI program on affected installations.
CVE-2021-1936 1Qualcomm 122Apq8009w Firmware Apq8017 FirmwareApq8053 Firmware+119 more Jun 17, 2026 Oct 20, 2021 N/A· v4 7.5 HIGH· v3 7.8 HIGH· v2 Null pointer dereference can occur due to lack of null check for user provided input in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Wearabl...Show more Null pointer dereference can occur due to lack of null check for user provided input in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon WearablesShow less
CVE-2021-1917 1Qualcomm 84Apq8017 Firmware Apq8053 FirmwareAqt1000 Firmware+81 more Jun 17, 2026 Oct 20, 2021 N/A· v4 8.4 HIGH· v3 7.2 HIGH· v2 Null pointer dereference can occur due to memory allocation failure in DIAG in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Wearables
CVE-2021-40732 2Adobe Debian 2Debian Linux Xmp Toolkit Software Development Kit Jun 17, 2026 Oct 13, 2021 N/A· v4 6.1 MEDIUM· v3 5.8 MEDIUM· v2 XMP Toolkit version 2020.1 (and earlier) is affected by a null pointer dereference vulnerability that could result in leaking data from certain memory locations and causing a local denial of service in the context of the...Show more XMP Toolkit version 2020.1 (and earlier) is affected by a null pointer dereference vulnerability that could result in leaking data from certain memory locations and causing a local denial of service in the context of the current user. User interaction is required to exploit this vulnerability in that the victim will need to open a specially crafted MXF file.Show less
CVE-2021-3322 1Zephyrproject 1Zephyr Jun 17, 2026 Oct 12, 2021 N/A· v4 6.5 MEDIUM· v3 3.3 LOW· v2 Unexpected Pointer Aliasing in IEEE 802154 Fragment Reassembly in Zephyr. Zephyr versions >= >=2.4.0 contain NULL Pointer Dereference (CWE-476). For more information, see https://github.com/zephyrproject-rtos/zephyr/secu...Show more Unexpected Pointer Aliasing in IEEE 802154 Fragment Reassembly in Zephyr. Zephyr versions >= >=2.4.0 contain NULL Pointer Dereference (CWE-476). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-p86r-gc4r-4mq3Show less
CVE-2020-22674 1Gpac 1Gpac Jun 17, 2026 Oct 12, 2021 N/A· v4 5.5 MEDIUM· v3 4.3 MEDIUM· v2 An issue was discovered in gpac 0.8.0. An invalid memory dereference exists in the function FixTrackID located in isom_intern.c, which allows attackers to cause a denial of service (DoS) via a crafted input.
CVE-2021-3671 3Debian NetappSamba 5Debian Linux Management Services For Element SoftwareManagement Services For Netapp Hci+2 more Jun 17, 2026 Oct 12, 2021 N/A· v4 6.5 MEDIUM· v3 4.0 MEDIUM· v2 A null pointer de-reference was found in the way samba kerberos server handled missing sname in TGS-REQ (Ticket Granting Server - Request). An authenticated user could use this flaw to crash the samba server.
CVE-2021-25491 1Google 1Android Jun 17, 2026 Oct 6, 2021 N/A· v4 4.4 MEDIUM· v3 2.1 LOW· v2 A vulnerability in mfc driver prior to SMR Oct-2021 Release 1 allows memory corruption via NULL-pointer dereference.
CVE-2021-3319 1Zephyrproject 1Zephyr Jun 17, 2026 Oct 5, 2021 N/A· v4 9.8 CRITICAL· v3 7.5 HIGH· v2 DOS: Incorrect 802154 Frame Validation for Omitted Source / Dest Addresses. Zephyr versions >= > v2.4.0 contain NULL Pointer Dereference (CWE-476), Attempt to Access Child of a Non-structure Pointer (CWE-588). For more i...Show more DOS: Incorrect 802154 Frame Validation for Omitted Source / Dest Addresses. Zephyr versions >= > v2.4.0 contain NULL Pointer Dereference (CWE-476), Attempt to Access Child of a Non-structure Pointer (CWE-588). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-94jg-2p6q-5364Show less
CVE-2021-41524 4Apache FedoraprojectNetapp+1 more 4Cloud Backup FedoraHttp Server+1 more Jun 17, 2026 Oct 5, 2021 N/A· v4 7.5 HIGH· v3 5.0 MEDIUM· v2 While fuzzing the 2.4.49 httpd, a new null pointer dereference was detected during HTTP/2 request processing, allowing an external source to DoS the server. This requires a specially crafted request. The vulnerability wa...Show more While fuzzing the 2.4.49 httpd, a new null pointer dereference was detected during HTTP/2 request processing, allowing an external source to DoS the server. This requires a specially crafted request. The vulnerability was recently introduced in version 2.4.49. No exploit is known to the project.Show less
CVE-2021-39860 1Adobe 4Acrobat Acrobat DcAcrobat Reader+1 more Jun 17, 2026 Sep 29, 2021 N/A· v4 5.5 MEDIUM· v3 4.3 MEDIUM· v2 Acrobat Pro DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage thi...Show more Acrobat Pro DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage this vulnerability to disclose sensitive user memory. Exploitation of this issue requires user interaction in that a victim must open a malicious file.Show less
CVE-2021-39854 1Adobe 4Acrobat Acrobat DcAcrobat Reader+1 more Jun 17, 2026 Sep 29, 2021 N/A· v4 5.5 MEDIUM· v3 4.3 MEDIUM· v2 Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage...Show more Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.Show less
CVE-2021-39853 1Adobe 4Acrobat Acrobat DcAcrobat Reader+1 more Jun 17, 2026 Sep 29, 2021 N/A· v4 5.5 MEDIUM· v3 4.3 MEDIUM· v2 Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage...Show more Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.Show less
CVE-2021-39852 1Adobe 4Acrobat Acrobat DcAcrobat Reader+1 more Jun 17, 2026 Sep 29, 2021 N/A· v4 5.5 MEDIUM· v3 4.3 MEDIUM· v2 Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage...Show more Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.Show less
CVE-2021-39851 1Adobe 4Acrobat Acrobat DcAcrobat Reader+1 more Jun 17, 2026 Sep 29, 2021 N/A· v4 5.5 MEDIUM· v3 4.3 MEDIUM· v2 Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage...Show more Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.Show less
CVE-2021-39850 1Adobe 4Acrobat Acrobat DcAcrobat Reader+1 more Jun 17, 2026 Sep 29, 2021 N/A· v4 5.5 MEDIUM· v3 4.3 MEDIUM· v2 Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage...Show more Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.Show less
CVE-2021-39849 1Adobe 4Acrobat Acrobat DcAcrobat Reader+1 more Jun 17, 2026 Sep 29, 2021 N/A· v4 5.5 MEDIUM· v3 4.3 MEDIUM· v2 Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage...Show more Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.Show less
CVE-2021-32987 1Aveva 1Suitelink Jun 17, 2026 Sep 23, 2021 N/A· v4 7.5 HIGH· v3 5.0 MEDIUM· v2 Null pointer dereference in SuiteLink server while processing command 0x0b
CVE-2021-32979 1Aveva 1Suitelink Jun 17, 2026 Sep 23, 2021 N/A· v4 7.5 HIGH· v3 5.0 MEDIUM· v2 Null pointer dereference in SuiteLink server while processing commands 0x04/0x0a

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