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CWE-476

5,858 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 (5,858)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
1Podofo Project
1Podofo
Nov 21, 2024
May 18, 2018
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
An issue was discovered in PoDoFo 0.9.5. The function PdfDocument::Append() in PdfDocument.cpp in PoDoFo 0.9.5 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a c...Show more
An issue was discovered in PoDoFo 0.9.5. The function PdfDocument::Append() in PdfDocument.cpp in PoDoFo 0.9.5 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted PDF document.Show less
1Podofo Project
1Podofo
Nov 21, 2024
May 18, 2018
N/A· v4
5.5 MEDIUM· v3
4.3 MEDIUM· v2
An issue was discovered in PoDoFo 0.9.5. The function PdfPage::GetPageNumber() in PdfPage.cpp in PoDoFo 0.9.5 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a cr...Show more
An issue was discovered in PoDoFo 0.9.5. The function PdfPage::GetPageNumber() in PdfPage.cpp in PoDoFo 0.9.5 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted PDF document.Show less
1Squid Cache
1Squid
Nov 21, 2024
May 16, 2018
N/A· v4
5.9 MEDIUM· v3
4.3 MEDIUM· v2
This vulnerability allows remote attackers to deny service on vulnerable installations of The Squid Software Foundation Squid 3.5.27-20180318. Authentication is not required to exploit this vulnerability. The specific fl...Show more
This vulnerability allows remote attackers to deny service on vulnerable installations of The Squid Software Foundation Squid 3.5.27-20180318. Authentication is not required to exploit this vulnerability. The specific flaw exists within ClientRequestContext::sslBumpAccessCheck(). A crafted request can trigger the dereference of a null pointer. An attacker can leverage this vulnerability to create a denial-of-service condition to users of the system. Was ZDI-CAN-6088.Show less
1Hdfgroup
1Hdf5
Nov 21, 2024
May 16, 2018
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
A NULL pointer dereference was discovered in H5O__chunk_deserialize in H5Ocache.c in the HDF HDF5 1.10.2 library. It could allow a remote denial of service attack.
1Hdfgroup
1Hdf5
Nov 21, 2024
May 16, 2018
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
A NULL pointer dereference was discovered in H5S_hyper_make_spans in H5Shyper.c in the HDF HDF5 1.10.2 library. It could allow a remote denial of service attack.
1Solarwinds
1Serv U
Nov 21, 2024
May 16, 2018
N/A· v4
6.5 MEDIUM· v3
4.0 MEDIUM· v2
A denial of service vulnerability in SolarWinds Serv-U before 15.1.6 HFv1 allows an authenticated user to crash the application (with a NULL pointer dereference) via a specially crafted URL beginning with the /Web%20Clie...Show more
A denial of service vulnerability in SolarWinds Serv-U before 15.1.6 HFv1 allows an authenticated user to crash the application (with a NULL pointer dereference) via a specially crafted URL beginning with the /Web%20Client/ substring.Show less
1Advantech
4Webaccess
Webaccess/nmsWebaccess Dashboard+1 more
Jun 17, 2026
May 15, 2018
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
In Advantech WebAccess versions V8.2_20170817 and prior, WebAccess versions V8.3.0 and prior, WebAccess Dashboard versions V.2.0.15 and prior, WebAccess Scada Node versions prior to 8.3.1, and WebAccess/NMS 2.0.3 and pri...Show more
In Advantech WebAccess versions V8.2_20170817 and prior, WebAccess versions V8.3.0 and prior, WebAccess Dashboard versions V.2.0.15 and prior, WebAccess Scada Node versions prior to 8.3.1, and WebAccess/NMS 2.0.3 and prior, several untrusted pointer dereference vulnerabilities have been identified, which may allow an attacker to execute arbitrary code.Show less
1Moxa
1Edr 810 Firmware
Nov 21, 2024
May 14, 2018
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
An exploitable denial of service vulnerability exists in the web server functionality of Moxa EDR-810 V4.1 build 17030317. A specially crafted HTTP URI can cause a null pointer dereference resulting in denial of service....Show more
An exploitable denial of service vulnerability exists in the web server functionality of Moxa EDR-810 V4.1 build 17030317. A specially crafted HTTP URI can cause a null pointer dereference resulting in denial of service. An attacker can send a GET request to "/MOXA\_LOG.ini" without a cookie header to trigger this vulnerability.Show less
1Moxa
1Edr 810 Firmware
Nov 21, 2024
May 14, 2018
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
An exploitable denial of service vulnerability exists in the web server functionality of Moxa EDR-810 V4.1 build 17030317. A specially crafted HTTP URI can cause a null pointer dereference resulting in denial of service....Show more
An exploitable denial of service vulnerability exists in the web server functionality of Moxa EDR-810 V4.1 build 17030317. A specially crafted HTTP URI can cause a null pointer dereference resulting in denial of service. An attacker can send a GET request to "/MOXA\_CFG2.ini" without a cookie header to trigger this vulnerability.Show less
1Moxa
1Edr 810 Firmware
Nov 21, 2024
May 14, 2018
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
An exploitable denial of service vulnerability exists in the web server functionality of Moxa EDR-810 V4.1 build 17030317. A specially crafted HTTP URI can cause a null pointer dereference resulting in denial of service....Show more
An exploitable denial of service vulnerability exists in the web server functionality of Moxa EDR-810 V4.1 build 17030317. A specially crafted HTTP URI can cause a null pointer dereference resulting in denial of service. An attacker can send a GET request to "/MOXA\_CFG.ini" without a cookie header to trigger this vulnerability.Show less
1Moxa
1Edr 810 Firmware
Nov 21, 2024
May 14, 2018
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
An exploitable denial of service vulnerability exists in the web server functionality of Moxa EDR-810 V4.1 build 17030317. A specially crafted HTTP URI can cause a null pointer dereference resulting in the web server cra...Show more
An exploitable denial of service vulnerability exists in the web server functionality of Moxa EDR-810 V4.1 build 17030317. A specially crafted HTTP URI can cause a null pointer dereference resulting in the web server crashing. An attacker can send a crafted URI to trigger this vulnerability.Show less
4Canonical
DebianLinux+1 more
6Debian Linux
Enterprise Linux DesktopEnterprise Linux Server+3 more
Nov 21, 2024
May 10, 2018
N/A· v4
5.5 MEDIUM· v3
4.9 MEDIUM· v2
Linux kernel before version 4.16-rc7 is vulnerable to a null pointer dereference in dccp_write_xmit() function in net/dccp/output.c in that allows a local user to cause a denial of service by a number of certain crafted...Show more
Linux kernel before version 4.16-rc7 is vulnerable to a null pointer dereference in dccp_write_xmit() function in net/dccp/output.c in that allows a local user to cause a denial of service by a number of certain crafted system calls.Show less
1Hwinfo
1Amd64 Kernel Driver
Jun 17, 2026
May 10, 2018
N/A· v4
5.5 MEDIUM· v3
4.9 MEDIUM· v2
HWiNFO AMD64 Kernel driver version 8.98 and lower allows an unprivileged user to send an IOCTL to the device driver. If input and/or output buffer pointers are NULL or if these buffers' data are invalid, a NULL/invalid p...Show more
HWiNFO AMD64 Kernel driver version 8.98 and lower allows an unprivileged user to send an IOCTL to the device driver. If input and/or output buffer pointers are NULL or if these buffers' data are invalid, a NULL/invalid pointer access occurs, resulting in a Windows kernel panic aka Blue Screen. This affects IOCTLs higher than 0x85FE2600 with the HWiNFO32 symbolic device name.Show less
2Debian
Quassel Irc
2Debian Linux
Quassel
Nov 21, 2024
May 8, 2018
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
A NULL Pointer Dereference of CWE-476 exists in quassel version 0.12.4 in the quasselcore void CoreAuthHandler::handle(const Login &msg) coreauthhandler.cpp line 235 that allows an attacker to cause a denial of service.
3Debian
Nghttp2Nodejs
3Debian Linux
Nghttp2Node.js
Jun 9, 2025
May 8, 2018
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
nghttp2 version >= 1.10.0 and nghttp2 <= v1.31.0 contains an Improper Input Validation CWE-20 vulnerability in ALTSVC frame handling that can result in segmentation fault leading to denial of service. This attack appears...Show more
nghttp2 version >= 1.10.0 and nghttp2 <= v1.31.0 contains an Improper Input Validation CWE-20 vulnerability in ALTSVC frame handling that can result in segmentation fault leading to denial of service. This attack appears to be exploitable via network client. This vulnerability appears to have been fixed in >= 1.31.1.Show less
1Bibutils Project
1Bibutils
Nov 21, 2024
May 7, 2018
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
NULL pointer dereference in the _fields_add function in fields.c in libbibcore.a in bibutils through 6.2 allows remote attackers to cause a denial of service (application crash), as demonstrated by end2xml.
1Bibutils Project
1Bibutils
Nov 21, 2024
May 7, 2018
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
NULL pointer deference in the addsn function in serialno.c in libbibcore.a in bibutils through 6.2 allows remote attackers to cause a denial of service (application crash), as demonstrated by copac2xml.
4Canonical
DebianFreedesktop+1 more
7Ansible Tower
Debian LinuxEnterprise Linux Desktop+4 more
Nov 21, 2024
May 6, 2018
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
There is a NULL pointer dereference in the AnnotPath::getCoordsLength function in Annot.h in an Ubuntu package for Poppler 0.24.5. A crafted input will lead to a remote denial of service attack. Later Ubuntu packages suc...Show more
There is a NULL pointer dereference in the AnnotPath::getCoordsLength function in Annot.h in an Ubuntu package for Poppler 0.24.5. A crafted input will lead to a remote denial of service attack. Later Ubuntu packages such as for Poppler 0.41.0 are not affected.Show less
4Canonical
DebianNetapp+1 more
4Debian Linux
PhpStorage Automation Store+1 more
Nov 21, 2024
Apr 29, 2018
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
An issue was discovered in PHP before 5.6.36, 7.0.x before 7.0.30, 7.1.x before 7.1.17, and 7.2.x before 7.2.5. ext/ldap/ldap.c allows remote LDAP servers to cause a denial of service (NULL pointer dereference and applic...Show more
An issue was discovered in PHP before 5.6.36, 7.0.x before 7.0.30, 7.1.x before 7.1.17, and 7.2.x before 7.2.5. ext/ldap/ldap.c allows remote LDAP servers to cause a denial of service (NULL pointer dereference and application crash) because of mishandling of the ldap_get_dn return value.Show less
2Gnu
Redhat
4Binutils
Enterprise Linux DesktopEnterprise Linux Server+1 more
Nov 21, 2024
Apr 29, 2018
N/A· v4
5.5 MEDIUM· v3
4.3 MEDIUM· v2
The ignore_section_sym function in elf.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.30, does not validate the output_section pointer in the case of a symtab entry with a "S...Show more
The ignore_section_sym function in elf.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.30, does not validate the output_section pointer in the case of a symtab entry with a "SECTION" type that has a "0" value, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted file, as demonstrated by objcopy.Show less