Weakness (CWE)
CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary.
How to prevent it (7 mitigations)
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Requirements
Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
For example, many languages that perform their own memory management, such as Java and Perl, are not subject to buffer overflows. Other languages, such as Ada and C#, typically provide overflow protection, but the protection can be disabled by the programmer.
Be wary that a language's interface to native code may still be subject to overflows, even if the language itself is theoretically safe.
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Architecture and Design
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Examples include the Safe C String Library (SafeStr) by Messier and Viega [REF-57], and the Strsafe.h library from Microsoft [REF-56]. These libraries provide safer versions of overflow-prone string-handling functions.
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Operation, Build and Compilation
Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking.
D3-SFCV (Stack Frame Canary Validation) from D3FEND [REF-1334] discusses canary-based detection in detail.
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Implementation
Consider adhering to the following rules when allocating and managing an application's memory:
- Double check that the buffer is as large as specified.
- When using functions that accept a number of bytes to copy, such as strncpy(), be aware that if the destination buffer size is equal to the source buffer size, it may not NULL-terminate the string.
- Check buffer boundaries if accessing the buffer in a loop and make sure there is no danger of writing past the allocated space.
- If necessary, truncate all input strings to a reasonable length before passing them to the copy and concatenation functions.
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Operation, Build and Compilation
Run or compile the software using features or extensions that randomly arrange the positions of a program's executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code.
Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as "rebasing" (for Windows) and "prelinking" (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.
For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].
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Operation
Use a CPU and operating system that offers Data Execution Protection (using hardware NX or XD bits) or the equivalent techniques that simulate this feature in software, such as PaX [REF-60] [REF-61]. These techniques ensure that any instruction executed is exclusively at a memory address that is part of the code segment.
For more information on these techniques see D3-PSEP (Process Segment Execution Prevention) from D3FEND [REF-1336].
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Implementation
Replace unbounded copy functions with analogous functions that support length arguments, such as strcpy with strncpy. Create these if they are not available.
Source: MITRE CWE-119
3,721 results · Feed
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Medium 6.8
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Medium 5.3
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High 8.8CVE-2026-8389 Public exploit
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JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 150.0.3.
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Medium 6.5CVE-2026-8388 Public exploit
Incorrect boundary conditions in the JavaScript Engine: JIT component
Incorrect boundary conditions in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11.
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Medium 4.3
omec-project amf NGAP Message memory corruption
A flaw has been found in omec-project amf up to 2.1.1. This vulnerability affects unknown code of the component NGAP Message Handler. Executing a manipulation can lead to memory corruption. The attack can be launched remotely. The exploit has been published a…
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High 8.8
The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 an…
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Medium 4.3
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5, iOS 26.5 and iPadOS 26.5, ma…
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High 7.1
The issue was addressed with improved checks. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, macOS Sequoia 15.7.7…
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Medium 6.2
The issue was addressed with improved bounds checks. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and …
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High 7.5
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5, iOS 18.7.10 and iPadOS 18.7.…
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High 7.5
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5, iOS 26.5 and iPadOS 26.5, ma…
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High 7.5
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5, iOS 26.5 and iPadOS 26.5, ma…
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High 7.5
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5, iOS 26.5 and iPadOS 26.5, ma…
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High 7.5CVE-2026-28990 Public exploit
The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5 …
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High 7.5
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5, iOS 18.7.9 and iPadOS 18.7.9…
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High 7.5
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5, iOS 18.7.9 and iPadOS 18.7.9…
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Medium 6.5
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5, iOS 18.7.9 and iPadOS 18.7.9…
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Medium 6.5
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5, iOS 26.5 and iPadOS 26.5, ma…
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High 8.8
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5, iOS 18.7.9 and iPadOS 18.7.9…
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High 8.8
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5, iOS 18.7.9 and iPadOS 18.7.9…
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High 7.5
The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.7, macOS Sonoma 14.8.7…
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Medium 5.9
Squirrel sqobject.cpp Load heap-based overflow
A vulnerability was determined in Squirrel up to 3.2. This affects the function SQFunctionProto::Load of the file squirrel/sqobject.cpp. This manipulation causes heap-based buffer overflow. The attack is restricted to local execution. The exploit has been pub…
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High 8.8
D-Link DCS-935L HNAP Service hnap_service SetDeviceSettings buffer overflow
A vulnerability was found in D-Link DCS-935L up to 1.10.01. The impacted element is the function SetDeviceSettings of the file /web/cgi-bin/hnap/hnap_service of the component HNAP Service. The manipulation of the argument AdminPassword results in buffer overf…
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Medium 5.3
Squirrel sqstdstring.cpp validate_format stack-based overflow
A flaw has been found in Squirrel up to 3.2. Impacted is the function validate_format in the library sqstdlib/sqstdstring.cpp. Executing a manipulation can lead to stack-based buffer overflow. The attack can only be executed locally. The exploit has been publ…
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High 8.8
EFM ipTIME A8004T WifiBasicSet formWifiBasicSet stack-based overflow
A security vulnerability has been detected in EFM ipTIME A8004T 14.18.2. This vulnerability affects the function formWifiBasicSet of the file /goform/WifiBasicSet. The manipulation of the argument security_5g leads to stack-based buffer overflow. The attack m…
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Medium 5.3
OSGeo gdal Grid File GDapi.c GDSDfldsrch heap-based overflow
A vulnerability has been found in OSGeo gdal up to 3.13.0dev-4. Affected by this issue is the function GDSDfldsrch of the file frmts/hdf4/hdf-eos/GDapi.c of the component Grid File Handler. The manipulation leads to heap-based buffer overflow. An attack has t…
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Medium 5.3
OSGeo gdal SWapi.c SWSDfldsrch heap-based overflow
A flaw has been found in OSGeo gdal up to 3.13.0dev-4. Affected by this vulnerability is the function SWSDfldsrch of the file frmts/hdf4/hdf-eos/SWapi.c. Executing a manipulation can lead to heap-based buffer overflow. The attack requires local access. The ex…
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Medium 5.3
Open5GS NF client.c ogs_sbi_client_send_via_scp_or_sepp out-of-bounds
A vulnerability was detected in Open5GS up to 2.7.7. This affects the function ogs_sbi_client_send_via_scp_or_sepp in the library lib/sbi/client.c of the component NF. Performing a manipulation results in out-of-bounds read. The attack is possible to be carri…
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High 8.8
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A vulnerability was found in Tenda CX12L 16.03.53.12. This issue affects the function formSetPPTPServer of the file /goform/SetPptpServerCfg”. The manipulation results in stack-based buffer overflow. The attack can be executed remotely. The exploit has been m…
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High 8.8
Totolink X5000R formDdns sub_458E40 buffer overflow
A vulnerability has been found in Totolink X5000R 9.1.0u.6369_B20230113. This vulnerability affects the function sub_458E40 of the file /boafrm/formDdns. The manipulation of the argument submit-url leads to buffer overflow. Remote exploitation of the attack i…
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Low 3.3
OSGeo gdal GDapi.c GDfieldinfo out-of-bounds
A weakness has been identified in OSGeo gdal up to 3.13.0dev-4. The affected element is the function GDfieldinfo of the file frmts/hdf4/hdf-eos/GDapi.c. Executing a manipulation can lead to out-of-bounds read. The attack needs to be launched locally. The expl…
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Medium 5.3
OSGeo gdal GDapi.c GDnentries heap-based overflow
A security flaw has been discovered in OSGeo gdal up to 3.13.0dev-4. Impacted is the function GDnentries of the file frmts/hdf4/hdf-eos/GDapi.c. Performing a manipulation of the argument DataFieldName results in heap-based buffer overflow. The attack must be …
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Medium 5.3
OSGeo gdal SWapi.c SWnentries heap-based overflow
A vulnerability was identified in OSGeo gdal up to 3.13.0dev-4. This issue affects the function SWnentries of the file frmts/hdf4/hdf-eos/SWapi.c. Such manipulation of the argument DimensionName leads to heap-based buffer overflow. The attack must be carried …
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Low 3.3
OSGeo gdal HDF-EOS Grid File SWapi.c memmove out-of-bounds
A vulnerability was determined in OSGeo gdal up to 3.13.0dev-4. This vulnerability affects the function memmove of the file frmts/hdf4/hdf-eos/SWapi.c of the component HDF-EOS Grid File Handler. This manipulation causes out-of-bounds read. The attack is restr…
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High 8.1
Memory safety bugs fixed in Thunderbird 150.0.2
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High 7.2
D-Link DI-8100 CGI user_group.asp sprintf buffer overflow
A vulnerability has been found in D-Link DI-8100 16.07.26A1. This vulnerability affects the function sprintf of the file /user_group.asp of the component CGI Handler. The manipulation leads to buffer overflow. The attack may be initiated remotely. The exploit…
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High 7.2
D-Link DI-8100 Web Management url_member.asp buffer overflow
A flaw has been found in D-Link DI-8100 16.07.26A1. This affects an unknown part of the file /url_member.asp of the component Web Management Interface. Executing a manipulation of the argument Name can lead to buffer overflow. The attack can be launched remot…
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High 8.8
D-Link DI-8100 HTTP Request tggl.asp tggl_asp buffer overflow
A vulnerability was detected in D-Link DI-8100 16.07.26A1. Affected by this issue is the function tggl_asp of the file /tggl.asp of the component HTTP Request Handler. Performing a manipulation of the argument Name results in buffer overflow. The attack can b…
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Critical 9.8
D-Link DI-8100 POST Parameter url_rule.asp url_rule_asp buffer overflow
A security vulnerability has been detected in D-Link DI-8100 16.07.26A1. Affected by this vulnerability is the function url_rule_asp of the file /url_rule.asp of the component POST Parameter Handler. Such manipulation leads to buffer overflow. It is possible …
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Critical 9.8
D-Link DI-8100 HTTP auto_reboot.asp sprintf buffer overflow
A weakness has been identified in D-Link DI-8100 16.07.26A1. Affected is the function sprintf of the file /auto_reboot.asp of the component HTTP Handler. This manipulation of the argument enable/time causes buffer overflow. It is possible to initiate the atta…