Common Weakness Enumeration
CWE-476
AllowedNULL Pointer Dereference
Abstraction: Base · Status: Stable
The product dereferences a pointer that it expects to be valid but is NULL.
6769 vulnerabilities reference this CWE, most recent first.
CVE-2020-10600 (GCVE-0-2020-10600)
Vulnerability from cvelistv5 – Published: 2020-07-24 23:01 – Updated: 2024-09-16 19:20
VLAI
EPSS
VEX
Title
OSIsoft PI System
Summary
An authenticated remote attacker could crash PI Archive Subsystem when the subsystem is working under memory pressure. This can result in blocking queries to PI Data Archive (2018 SP2 and prior versions).
Severity
5.9 (Medium)
CWE
- CWE-476 - NULL POINTER DEREFERENCE CWE-476
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://us-cert.cisa.gov/ics/advisories/icsa-20-133-02 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OSIsoft | PI Data Archive |
Affected:
unspecified , < 2018 SP2
(custom)
|
Date Public
2020-06-09 00:00
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CVE-2020-10066 (GCVE-0-2020-10066)
Vulnerability from cvelistv5 – Published: 2021-05-24 21:40 – Updated: 2024-09-17 01:41
VLAI
EPSS
VEX
Title
Incorrect Error Handling in Bluetooth HCI core
Summary
Incorrect Error Handling in Bluetooth HCI core. Zephyr versions >= v1.14.2, >= v2.2.0 contain NULL Pointer Dereference (CWE-476). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-gc66-xfrc-24qr
Severity
CWE
- CWE-476 - NULL Pointer Dereference (CWE-476)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| http://github.com/zephyrproject-rtos/zephyr/secur… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| zephyrproject-rtos | zephyr |
Affected:
v1.14.2 , < unspecified
(custom)
Affected: v2.2.0 , < unspecified (custom) |
Date Public
2020-06-29 00:00
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CVE-2020-9746 (GCVE-0-2020-9746)
Vulnerability from cvelistv5 – Published: 2020-10-14 13:17 – Updated: 2025-04-23 19:47
VLAI
EPSS
VEX
Title
Exploitable NULL pointer deref could lead to arbitrary code execution
Summary
Adobe Flash Player version 32.0.0.433 (and earlier) are affected by an exploitable NULL pointer dereference vulnerability that could result in a crash and arbitrary code execution. Exploitation of this issue requires an attacker to insert malicious strings in an HTTP response that is by default delivered over TLS/SSL.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-23 13:20 UTC
CWE
- CWE-476 - NULL Pointer Dereference (CWE-476)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/flash-p… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Flash Player |
Affected:
unspecified , ≤ 32.0.0.387
(custom)
Affected: unspecified , ≤ 32.0.0.433 (custom) Affected: unspecified , ≤ None (custom) |
Date Public
2020-10-13 00:00
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CVE-2020-9085 (GCVE-0-2020-9085)
Vulnerability from cvelistv5 – Published: 2024-12-27 09:37 – Updated: 2024-12-27 16:06
VLAI
EPSS
VEX
Summary
There is a NULL pointer dereference vulnerability in some Huawei products. An attacker may send specially crafted POST messages to the affected products. Due to insufficient validation of some parameter in the message, successful exploit may cause some process abnormal. (Vulnerability ID: HWPSIRT-2017-10105)
This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2020-9085.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-12-27 16:06 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Huawei | HUAWEI 4G Router B612 |
Affected:
B612s-25dTCPU-V100R001B192D03SP00C234
Affected: B612s-25dTCPU-V100R001B192D03SP00C287 Affected: B612s-25dTCPU-V100R001B192D05SP00C00 |
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CVE-2020-8859 (GCVE-0-2020-8859)
Vulnerability from cvelistv5 – Published: 2020-03-23 20:25 – Updated: 2024-08-04 10:12
VLAI
EPSS
VEX
Summary
This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of ELOG Electronic Logbook 3.1.4-283534d. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of HTTP parameters. A crafted request can trigger the dereference of a null pointer. An attacker can leverage this vulnerability to create a denial-of-service condition. Was ZDI-CAN-10115.
Severity
5.3 (Medium)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_refsource_MISC |
| https://elog.psi.ch/elogs/Forum/69114 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ELOG | Electronic Logbook |
Affected:
3.1.4-283534d
|
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CVE-2020-8569 (GCVE-0-2020-8569)
Vulnerability from cvelistv5 – Published: 2021-01-21 17:09 – Updated: 2024-09-17 01:47
VLAI
EPSS
VEX
Title
Kubernetes CSI snapshot-controller DoS
Summary
Kubernetes CSI snapshot-controller prior to v2.1.3 and v3.0.2 could panic when processing a VolumeSnapshot custom resource when: - The VolumeSnapshot referenced a non-existing PersistentVolumeClaim and the VolumeSnapshot did not reference any VolumeSnapshotClass. - The snapshot-controller crashes, is automatically restarted by Kubernetes, and processes the same VolumeSnapshot custom resource after the restart, entering an endless crashloop. Only the volume snapshot feature is affected by this vulnerability. When exploited, users can’t take snapshots of their volumes or delete the snapshots. All other Kubernetes functionality is not affected.
Severity
4.3 (Medium)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://groups.google.com/g/kubernetes-security-a… | x_refsource_MISC |
| https://github.com/kubernetes-csi/external-snapsh… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Kubernetes | CSI Snapshotter |
Affected:
snapshot-controller v3.0 , ≤ v3.0.1
(custom)
Affected: snapshot-controller v2.1 , ≤ v2.1.2 (custom) |
Date Public
2020-11-17 00:00
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CVE-2020-7062 (GCVE-0-2020-7062)
Vulnerability from cvelistv5 – Published: 2020-02-27 20:25 – Updated: 2024-09-16 22:24
VLAI
EPSS
VEX
Title
Null Pointer Dereference in PHP Session Upload Progress
Summary
In PHP versions 7.2.x below 7.2.28, 7.3.x below 7.3.15 and 7.4.x below 7.4.3, when using file upload functionality, if upload progress tracking is enabled, but session.upload_progress.cleanup is set to 0 (disabled), and the file upload fails, the upload procedure would try to clean up data that does not exist and encounter null pointer dereference, which would likely lead to a crash.
Severity
7.5 (High)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://bugs.php.net/bug.php?id=79221 | x_refsource_MISC |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| https://security.gentoo.org/glsa/202003-57 | vendor-advisoryx_refsource_GENTOO |
| https://lists.debian.org/debian-lts-announce/2020… | mailing-listx_refsource_MLIST |
| https://usn.ubuntu.com/4330-1/ | vendor-advisoryx_refsource_UBUNTU |
| https://www.debian.org/security/2020/dsa-4717 | vendor-advisoryx_refsource_DEBIAN |
| https://www.debian.org/security/2020/dsa-4719 | vendor-advisoryx_refsource_DEBIAN |
| https://www.tenable.com/security/tns-2021-14 | x_refsource_CONFIRM |
Impacted products
Date Public
2020-02-17 00:00
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CVE-2020-5762 (GCVE-0-2020-5762)
Vulnerability from cvelistv5 – Published: 2020-07-29 18:51 – Updated: 2024-08-04 08:39
VLAI
EPSS
VEX
Summary
Grandstream HT800 series firmware version 1.0.17.5 and below is vulnerable to a denial of service attack against the TR-069 service. An unauthenticated remote attacker can stop the service due to a NULL pointer dereference in the TR-069 service. This condition is triggered due to mishandling of the HTTP Authentication field.
Severity
No CVSS data available.
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.tenable.com/security/research/tra-2020-43 | x_refsource_MISC |
| https://www.tenable.com/security/research/tra-2020-47 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Grandstream HT800 Series |
Affected:
Versions 1.0.17.5 and below
|
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CVE-2020-5736 (GCVE-0-2020-5736)
Vulnerability from cvelistv5 – Published: 2020-04-08 12:42 – Updated: 2024-08-04 08:39
VLAI
EPSS
VEX
Summary
Amcrest cameras and NVR are vulnerable to a null pointer dereference over port 37777. An authenticated remote attacker can abuse this issue to crash the device.
Severity
No CVSS data available.
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.tenable.com/security/research/tra-2020-20 | x_refsource_MISC |
Impacted products
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CVE-2020-3552 (GCVE-0-2020-3552)
Vulnerability from cvelistv5 – Published: 2020-09-24 17:51 – Updated: 2024-11-13 18:01
VLAI
EPSS
VEX
Title
Cisco Aironet Access Points Ethernet Wired Clients Denial of Service Vulnerability
Summary
A vulnerability in the Ethernet packet handling of Cisco Aironet Access Points (APs) Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by connecting as a wired client to the Ethernet interface of an affected device and sending a series of specific packets within a short time frame. A successful exploit could allow the attacker to cause a NULL pointer access that results in a reload of the affected device.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-11-13 17:23 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://tools.cisco.com/security/center/content/C… | vendor-advisoryx_refsource_CISCO |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Aironet Access Point Software |
Affected:
n/a
|
Date Public
2020-09-24 00:00
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"value": "A vulnerability in the Ethernet packet handling of Cisco Aironet Access Points (APs) Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by connecting as a wired client to the Ethernet interface of an affected device and sending a series of specific packets within a short time frame. A successful exploit could allow the attacker to cause a NULL pointer access that results in a reload of the affected device."
}
]
},
"exploit": [
{
"lang": "en",
"value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
}
],
"impact": {
"cvss": {
"baseScore": "7.4",
"vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
"version": "3.0"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-476"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "20200924 Cisco Aironet Access Points Ethernet Wired Clients Denial of Service Vulnerability",
"refsource": "CISCO",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ap-ethport-dos-xtjTt8pY"
}
]
},
"source": {
"advisory": "cisco-sa-ap-ethport-dos-xtjTt8pY",
"defect": [
[
"CSCvq94716"
]
],
"discovery": "INTERNAL"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2020-3552",
"datePublished": "2020-09-24T17:51:08.669Z",
"dateReserved": "2019-12-12T00:00:00.000Z",
"dateUpdated": "2024-11-13T18:01:45.175Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
Mitigation MIT-56
Implementation
For any pointers that could have been modified or provided from a function that can return NULL, check the pointer for NULL before use. When working with a multithreaded or otherwise asynchronous environment, ensure that proper locking APIs are used to lock before the check, and unlock when it has finished [REF-1484].
Mitigation
Requirements
Select a programming language that is not susceptible to these issues.
Mitigation
Implementation
Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
Mitigation
Architecture and Design
Identify all variables and data stores that receive information from external sources, and apply input validation to make sure that they are only initialized to expected values.
Mitigation
Implementation
Explicitly initialize all variables and other data stores, either during declaration or just before the first usage.
No CAPEC attack patterns related to this CWE.