Common Weakness Enumeration
CWE-170
AllowedImproper Null Termination
Abstraction: Base · Status: Incomplete
The product does not terminate or incorrectly terminates a string or array with a null character or equivalent terminator.
77 vulnerabilities reference this CWE, most recent first.
CVE-2021-1120 (GCVE-0-2021-1120)
Vulnerability from cvelistv5 – Published: 2021-10-29 19:30 – Updated: 2024-08-03 15:55
VLAI
EPSS
VEX
Summary
NVIDIA vGPU software contains a vulnerability in the Virtual GPU Manager (vGPU plugin), where a string provided by the guest OS may not be properly null terminated. The guest OS or attacker has no ability to push content to the plugin through this vulnerability, which may lead to information disclosure, data tampering, unauthorized code execution, and denial of service.
Severity
CWE
- CWE-170 - Improper Null Termination
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://nvidia.custhelp.com/app/answers/detail/a_… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NVIDIA | NVIDIA Virtual GPU Software |
Affected:
vGPU version 13.x (prior to 13.1), 12.x (prior to 12.4), version 11.x (prior to 11.6) and version 8.x (prior 8.9).
|
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CVE-2020-27736 (GCVE-0-2020-27736)
Vulnerability from cvelistv5 – Published: 2021-04-22 20:42 – Updated: 2024-08-04 16:18
VLAI
EPSS
VEX
Summary
A vulnerability has been identified in APOGEE PXC Compact (BACnet) (All versions < V3.5.5), APOGEE PXC Compact (P2 Ethernet) (All versions < V2.8.20), APOGEE PXC Modular (BACnet) (All versions < V3.5.5), APOGEE PXC Modular (P2 Ethernet) (All versions < V2.8.20), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.3), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (Versions including affected DNS modules), SIMOTICS CONNECT 400 (All versions < V0.5.0.0), TALON TC Compact (BACnet) (All versions < V3.5.5), TALON TC Modular (BACnet) (All versions < V3.5.5). The DNS domain name label parsing functionality does not properly validate the null-terminated name in DNS-responses. The parsing of malformed responses could result in a read past the end of an allocated structure. An attacker with a privileged position in the network could leverage this vulnerability to cause a denial-of-service condition or leak the read memory.
Severity
CWE
- CWE-170 - Improper Null Termination
Assigner
References
Impacted products
11 products
| Vendor | Product | Version | |
|---|---|---|---|
| Siemens | APOGEE PXC Compact (BACnet) |
Affected:
All versions < V3.5.5
|
|
| Siemens | APOGEE PXC Compact (P2 Ethernet) |
Affected:
All versions < V2.8.20
|
|
| Siemens | APOGEE PXC Modular (BACnet) |
Affected:
All versions < V3.5.5
|
|
| Siemens | APOGEE PXC Modular (P2 Ethernet) |
Affected:
All versions < V2.8.20
|
|
| Siemens | Nucleus NET |
Affected:
All versions
|
|
| Siemens | Nucleus ReadyStart V3 |
Affected:
All versions < V2017.02.3
|
|
| Siemens | Nucleus ReadyStart V4 |
Affected:
All versions < V4.1.0
|
|
| Siemens | Nucleus Source Code |
Affected:
Versions including affected DNS modules
|
|
| Siemens | SIMOTICS CONNECT 400 |
Affected:
All versions < V0.5.0.0
|
|
| Siemens | TALON TC Compact (BACnet) |
Affected:
All versions < V3.5.5
|
|
| Siemens | TALON TC Modular (BACnet) |
Affected:
All versions < V3.5.5
|
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CVE-2020-14323 (GCVE-0-2020-14323)
Vulnerability from cvelistv5 – Published: 2020-10-29 00:00 – Updated: 2024-08-04 12:39
VLAI
EPSS
VEX
Summary
A null pointer dereference flaw was found in samba's Winbind service in versions before 4.11.15, before 4.12.9 and before 4.13.1. A local user could use this flaw to crash the winbind service causing denial of service.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
10 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1891685 | |
| https://www.samba.org/samba/security/CVE-2020-143… | |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisory |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisory |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://security.netapp.com/advisory/ntap-2020110… | |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisory |
| https://lists.debian.org/debian-lts-announce/2020… | mailing-list |
| https://security.gentoo.org/glsa/202012-24 | vendor-advisory |
| https://lists.debian.org/debian-lts-announce/2024… | mailing-list |
Impacted products
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CVE-2020-7066 (GCVE-0-2020-7066)
Vulnerability from cvelistv5 – Published: 2020-04-01 03:35 – Updated: 2024-09-17 01:51
VLAI
EPSS
VEX
Title
get_headers() silently truncates after a null byte
Summary
In PHP versions 7.2.x below 7.2.29, 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while using get_headers() with user-supplied URL, if the URL contains zero (\0) character, the URL will be silently truncated at it. This may cause some software to make incorrect assumptions about the target of the get_headers() and possibly send some information to a wrong server.
Severity
5.3 (Medium)
CWE
- CWE-170 - Improper Null Termination
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://bugs.php.net/bug.php?id=79329 | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2020040… | x_refsource_CONFIRM |
| https://lists.debian.org/debian-lts-announce/2020… | mailing-listx_refsource_MLIST |
| https://usn.ubuntu.com/4330-2/ | vendor-advisoryx_refsource_UBUNTU |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| 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
2020-03-17 00:00
Credits
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CVE-2019-11045 (GCVE-0-2019-11045)
Vulnerability from cvelistv5 – Published: 2019-12-23 02:40 – Updated: 2024-09-16 17:32
VLAI
EPSS
VEX
Title
DirectoryIterator class silently truncates after a null byte
Summary
In PHP versions 7.2.x below 7.2.26, 7.3.x below 7.3.13 and 7.4.0, PHP DirectoryIterator class accepts filenames with embedded \0 byte and treats them as terminating at that byte. This could lead to security vulnerabilities, e.g. in applications checking paths that the code is allowed to access.
Severity
CWE
- CWE-170 - Improper Null Termination
Assigner
References
13 references
| URL | Tags |
|---|---|
| https://bugs.php.net/bug.php?id=78863 | x_refsource_MISC |
| https://lists.debian.org/debian-lts-announce/2019… | mailing-listx_refsource_MLIST |
| https://security.netapp.com/advisory/ntap-2020010… | x_refsource_CONFIRM |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://usn.ubuntu.com/4239-1/ | vendor-advisoryx_refsource_UBUNTU |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| https://seclists.org/bugtraq/2020/Feb/27 | mailing-listx_refsource_BUGTRAQ |
| https://www.debian.org/security/2020/dsa-4626 | vendor-advisoryx_refsource_DEBIAN |
| https://www.debian.org/security/2020/dsa-4628 | vendor-advisoryx_refsource_DEBIAN |
| https://seclists.org/bugtraq/2020/Feb/31 | mailing-listx_refsource_BUGTRAQ |
| https://seclists.org/bugtraq/2021/Jan/3 | mailing-listx_refsource_BUGTRAQ |
| https://www.tenable.com/security/tns-2021-14 | x_refsource_CONFIRM |
Impacted products
Date Public
2019-12-17 00:00
Credits
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CVE-2019-11044 (GCVE-0-2019-11044)
Vulnerability from cvelistv5 – Published: 2019-12-23 02:40 – Updated: 2024-09-17 01:47
VLAI
EPSS
VEX
Title
link() silently truncates after a null byte on Windows
Summary
In PHP versions 7.2.x below 7.2.26, 7.3.x below 7.3.13 and 7.4.0 on Windows, PHP link() function accepts filenames with embedded \0 byte and treats them as terminating at that byte. This could lead to security vulnerabilities, e.g. in applications checking paths that the code is allowed to access.
Severity
CWE
- CWE-170 - Improper Null Termination
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://bugs.php.net/bug.php?id=78862 | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2020010… | x_refsource_CONFIRM |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://www.tenable.com/security/tns-2021-14 | x_refsource_CONFIRM |
Impacted products
Date Public
2019-12-17 00:00
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CVE-2019-8275 (GCVE-0-2019-8275)
Vulnerability from cvelistv5 – Published: 2019-03-09 00:00 – Updated: 2024-09-17 03:12
VLAI
EPSS
VEX
Summary
UltraVNC revision 1211 has multiple improper null termination vulnerabilities in VNC server code, which result in out-of-bound data being accessed by remote users. This attack appears to be exploitable via network connectivity. These vulnerabilities have been fixed in revision 1212.
Severity
No CVSS data available.
CWE
- CWE-170 - Improper Null Termination
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://ics-cert.kaspersky.com/advisories/klcert-… | x_refsource_MISC |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
| https://www.us-cert.gov/ics/advisories/icsa-20-161-06 | x_refsource_MISC |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
| https://us-cert.cisa.gov/ics/advisories/icsa-21-131-11 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Kaspersky Lab | UltraVNC |
Affected:
1.2.2.3
|
Date Public
2019-03-01 00:00
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"cveId": "CVE-2019-8275",
"datePublished": "2019-03-09T00:00:00.000Z",
"dateReserved": "2019-02-12T00:00:00.000Z",
"dateUpdated": "2024-09-17T03:12:37.776Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
GHSA-2GMP-X9R7-XP6Q
Vulnerability from github – Published: 2024-09-18 15:30 – Updated: 2024-09-20 21:31
VLAI
Details
Improper Null Termination vulnerability in Open Networking Foundation (ONF) libfluid (libfluid_msg module). This vulnerability is associated with program routine fluid_msg::of10::Port:unpack.
This issue affects libfluid: 0.1.0.
Severity
5.3 (Medium)
{
"affected": [],
"aliases": [
"CVE-2024-31197"
],
"database_specific": {
"cwe_ids": [
"CWE-170"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-09-18T14:15:19Z",
"severity": "MODERATE"
},
"details": "Improper Null Termination vulnerability in Open Networking Foundation (ONF) libfluid (libfluid_msg module). This vulnerability is associated with program routine\u00a0fluid_msg::of10::Port:unpack.\n\nThis issue affects libfluid: 0.1.0.",
"id": "GHSA-2gmp-x9r7-xp6q",
"modified": "2024-09-20T21:31:39Z",
"published": "2024-09-18T15:30:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-31197"
},
{
"type": "WEB",
"url": "https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2024-31197"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-2QJX-H626-J6V4
Vulnerability from github – Published: 2026-02-26 18:31 – Updated: 2026-02-27 15:34
VLAI
Details
Golioth Firmware SDK version 0.19.1 prior to 0.22.0, fixed in commit 0e788217, contain an out-of-bounds read due to improper null termination of a blockwise transfer path. blockwise_transfer_init() accepts a path whose length equals CONFIG_GOLIOTH_COAP_MAX_PATH_LEN and copies it using strncpy() without guaranteeing a trailing NUL byte, leaving ctx->path unterminated. A later strlen() on this buffer (in golioth_coap_client_get_internal()) can read past the end of the allocation, resulting in a crash/denial of service. The input is application-controlled (not network by default).
Severity
{
"affected": [],
"aliases": [
"CVE-2026-23749"
],
"database_specific": {
"cwe_ids": [
"CWE-170"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-26T18:23:06Z",
"severity": "LOW"
},
"details": "Golioth Firmware SDK version\u00a00.19.1\u00a0prior to 0.22.0, fixed in commit\u00a00e788217, contain an out-of-bounds read due to improper null termination of a blockwise transfer path. blockwise_transfer_init() accepts a path whose length equals CONFIG_GOLIOTH_COAP_MAX_PATH_LEN and copies it using strncpy() without guaranteeing a trailing NUL byte, leaving ctx-\u003epath unterminated. A later strlen() on this buffer (in golioth_coap_client_get_internal()) can read past the end of the allocation, resulting in a crash/denial of service. The input is application-controlled (not network by default).",
"id": "GHSA-2qjx-h626-j6v4",
"modified": "2026-02-27T15:34:17Z",
"published": "2026-02-26T18:31:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23749"
},
{
"type": "WEB",
"url": "https://github.com/golioth/golioth-firmware-sdk/commit/0e788217ab4b61a7c1d9fadd1b4a40f5f538a26d"
},
{
"type": "WEB",
"url": "https://blog.secmate.dev/posts/golioth-vulnerabilities-disclosure"
},
{
"type": "WEB",
"url": "https://github.com/golioth/golioth-firmware-sdk/releases/tag/v0.22.0"
},
{
"type": "WEB",
"url": "https://secmate.dev/disclosures/SECMATE-2025-0017"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/golioth-firmware-sdk-blockwise-transfer-path-out-of-bounds-read"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-42VC-VFQH-CR2X
Vulnerability from github – Published: 2024-05-14 18:30 – Updated: 2024-11-27 21:32
VLAI
Details
A vulnerability has been identified in CPC80 Central Processing/Communication (All versions < V16.41), CPCI85 Central Processing/Communication (All versions < V5.30). The affected device firmwares contain an improper null termination vulnerability while parsing a specific HTTP header. This could allow an attacker to execute code in the context of the current process or lead to denial of service condition.
Severity
{
"affected": [],
"aliases": [
"CVE-2024-31484"
],
"database_specific": {
"cwe_ids": [
"CWE-170"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-14T16:16:50Z",
"severity": "HIGH"
},
"details": "A vulnerability has been identified in CPC80 Central Processing/Communication (All versions \u003c V16.41), CPCI85 Central Processing/Communication (All versions \u003c V5.30). The affected device firmwares contain an improper null termination vulnerability while parsing a specific HTTP header. This could allow an attacker to execute code in the context of the current process or lead to denial of service condition.",
"id": "GHSA-42vc-vfqh-cr2x",
"modified": "2024-11-27T21:32:43Z",
"published": "2024-05-14T18:30:59Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-31484"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-620338.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-871704.html"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2024/Jul/4"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2024/Nov/18"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
Mitigation
Requirements
Use a language that is not susceptible to these issues. However, be careful of null byte interaction errors (CWE-626) with lower-level constructs that may be written in a language that is susceptible.
Mitigation
Implementation
Ensure that all string functions used are understood fully as to how they append null characters. Also, be wary of off-by-one errors when appending nulls to the end of strings.
Mitigation
Implementation
If performance constraints permit, special code can be added that validates null-termination of string buffers, this is a rather naive and error-prone solution.
Mitigation
Implementation
Switch to bounded string manipulation functions. Inspect buffer lengths involved in the buffer overrun trace reported with the defect.
Mitigation
Implementation
Add code that fills buffers with nulls (however, the length of buffers still needs to be inspected, to ensure that the non null-terminated string is not written at the physical end of the buffer).
No CAPEC attack patterns related to this CWE.