Common Weakness Enumeration
CWE-120
Allowed-with-ReviewBuffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Abstraction: Base · Status: Incomplete
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
5443 vulnerabilities reference this CWE, most recent first.
CVE-2026-24800 (GCVE-0-2026-24800)
Vulnerability from cvelistv5 – Published: 2026-01-27 08:33 – Updated: 2026-01-27 17:02
VLAI
EPSS
VEX
Title
A heap-based buffer over-read or buffer overflow in tildearrow/furnace
Summary
Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in tildearrow furnace (extern/zlib modules). This vulnerability is associated with program files inflate.C.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/tildearrow/furnace/pull/2471 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| tildearrow | furnace |
Affected:
0 , < 0.6.8.3
(git)
|
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CVE-2026-24799 (GCVE-0-2026-24799)
Vulnerability from cvelistv5 – Published: 2026-01-27 08:31 – Updated: 2026-01-27 15:29
VLAI
EPSS
VEX
Title
A heap-based buffer over-read or buffer overflow in davisking/dlib
Summary
Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in davisking dlib (dlib/external/zlib modules). This vulnerability is associated with program files inflate.C.
This issue affects dlib: before v19.24.9.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/davisking/dlib/pull/3063 | patch |
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CVE-2026-24793 (GCVE-0-2026-24793)
Vulnerability from cvelistv5 – Published: 2026-01-27 08:19 – Updated: 2026-01-27 21:39
VLAI
EPSS
VEX
Title
A heap-based buffer over-read or buffer overflow vulnerability in azerothcore/azerothcore-wotlk
Summary
Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in azerothcore azerothcore-wotlk (deps/zlib modules). This vulnerability is associated with program files inflate.C.
This issue affects azerothcore-wotlk: through v4.0.0.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/azerothcore/azerothcore-wotlk/… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| azerothcore | azerothcore-wotlk |
Affected:
0 , ≤ v4.0.0
(git)
|
Date Public
2026-01-27 08:19
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CVE-2026-24344 (GCVE-0-2026-24344)
Vulnerability from cvelistv5 – Published: 2026-01-27 09:04 – Updated: 2026-01-27 14:25
VLAI
EPSS
VEX
Title
Multiple Buffer Overflows in EZCast Pro II Dongle
Summary
Multiple Buffer Overflows in Admin UI of EZCast Pro II version 1.17478.146 allow attackers to cause a program crash and potential remote code execution
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| EZCast | EZCast Pro II |
Affected:
1.17478.146
|
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CVE-2026-22861 (GCVE-0-2026-22861)
Vulnerability from cvelistv5 – Published: 2026-01-13 20:20 – Updated: 2026-01-13 21:45
VLAI
EPSS
VEX
Title
iccDEV has a heap-buffer-overflow in SIccCalcOp::Describe() at IccProfLib/IccMpeCalc.cpp
Summary
iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of International Color Consortium (ICC) color management profiles. Prior to 2.3.1.2, There is a heap-based buffer overflow in SIccCalcOp::Describe() at IccProfLib/IccMpeCalc.cpp. This vulnerability affects users of the iccDEV library who process ICC color profiles. The vulnerability is fixed in 2.3.1.2.
Severity
8.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/InternationalColorConsortium/i… | x_refsource_CONFIRM |
| https://github.com/InternationalColorConsortium/i… | x_refsource_MISC |
| https://github.com/InternationalColorConsortium/i… | x_refsource_MISC |
| https://github.com/InternationalColorConsortium/i… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| InternationalColorConsortium | iccDEV |
Affected:
< 2.3.1.2
|
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CVE-2026-22627 (GCVE-0-2026-22627)
Vulnerability from cvelistv5 – Published: 2026-03-10 16:44 – Updated: 2026-03-12 14:37
VLAI
EPSS
VEX
Summary
A buffer copy without checking size of input ('classic buffer overflow') vulnerability in Fortinet FortiSwitchAXFixed 1.0.0 through 1.0.1 may allow an unauthenticated attacker within the same adjacent network to execute unauthorized code or commands on the device via sending a crafted LLDP packet.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-120 - Execute unauthorized code or commands
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Fortinet | FortiSwitchAXFixed |
Affected:
1.0.0 , ≤ 1.0.1
(semver)
cpe:2.3:a:fortinet:fortiswitchaxfixed:1.0.1:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiswitchaxfixed:1.0.0:*:*:*:*:*:*:* |
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CVE-2026-21382 (GCVE-0-2026-21382)
Vulnerability from cvelistv5 – Published: 2026-04-06 15:33 – Updated: 2026-04-07 03:55
VLAI
EPSS
VEX
Title
Buffer Copy Without Checking Size of Input in Power Management IC
Summary
Memory Corruption when handling power management requests with improperly sized input/output buffers.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-120 - Buffer Copy Without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Qualcomm, Inc. | Snapdragon |
Affected:
Cologne
Affected: FastConnect 6900 Affected: FastConnect 7800 Affected: QCA0000 Affected: SC8380XP Affected: WCD9378C Affected: WCD9380 Affected: WCD9385 Affected: WSA8840 Affected: WSA8845 Affected: WSA8845H Affected: X2000077 Affected: X2000086 Affected: X2000090 Affected: X2000092 Affected: X2000094 Affected: XG101002 Affected: XG101032 Affected: XG101039 |
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CVE-2026-20794 (GCVE-0-2026-20794)
Vulnerability from cvelistv5 – Published: 2026-05-12 16:34 – Updated: 2026-05-13 03:58
VLAI
EPSS
VEX
Summary
Buffer overflow for the Intel(R) Data Center Graphics Driver for VMware ESXi software before version 2.0.2 within Ring 1: Device Drivers may allow an escalation of privilege. System software adversary with a privileged user combined with a low complexity attack may enable local code execution. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (high) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (high) and availability (high) impacts.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- Escalation of Privilege
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Intel(R) Data Center Graphics Driver for VMware ESXi software |
Affected:
before version 2.0.2
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CVE-2026-20782 (GCVE-0-2026-20782)
Vulnerability from cvelistv5 – Published: 2026-05-12 16:34 – Updated: 2026-05-12 17:18
VLAI
EPSS
VEX
Summary
Buffer overflow for some Intel(R) QAT software drivers for Windows before version 1.13 within Ring 3: User Applications may allow a denial of service. Unprivileged software adversary with an authenticated user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (low), integrity (low) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- Denial of Service
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Intel(R) QAT software drivers for Windows |
Affected:
before version 1.13
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CVE-2026-20449 (GCVE-0-2026-20449)
Vulnerability from cvelistv5 – Published: 2026-05-04 05:41 – Updated: 2026-05-04 12:59
VLAI
EPSS
VEX
Summary
In Modem, there is a possible system crash due to a heap buffer overflow. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01760138; Issue ID: MSV-6148.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-120 - Classic Buffer Overflow
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MediaTek, Inc. | MediaTek chipset |
Affected:
MT2735
Affected: MT2737 Affected: MT6739 Affected: MT6761 Affected: MT6762 Affected: MT6763 Affected: MT6765 Affected: MT6767 Affected: MT6768 Affected: MT6769 Affected: MT6771 Affected: MT6779 Affected: MT6781 Affected: MT6783 Affected: MT6785 Affected: MT6789 Affected: MT6813 Affected: MT6815 Affected: MT6833 Affected: MT6835 Affected: MT6853 Affected: MT6855 Affected: MT6858 Affected: MT6873 Affected: MT6875 Affected: MT6877 Affected: MT6878 Affected: MT6879 Affected: MT6880 Affected: MT6883 Affected: MT6885 Affected: MT6886 Affected: MT6889 Affected: MT6890 Affected: MT6891 Affected: MT6893 Affected: MT6895 Affected: MT6896 Affected: MT6897 Affected: MT6899 Affected: MT6980 Affected: MT6983 Affected: MT6985 Affected: MT6986D Affected: MT6988 Affected: MT6989 Affected: MT6990 Affected: MT6991 Affected: MT6993 Affected: MT8668 Affected: MT8673 Affected: MT8675 Affected: MT8676 Affected: MT8678 Affected: MT8755 Affected: MT8771 Affected: MT8775 Affected: MT8791 Affected: MT8791T Affected: MT8792 Affected: MT8793 Affected: MT8795T Affected: MT8797 Affected: MT8798 Affected: MT8863 Affected: MT8873 Affected: MT8883 Affected: MT8893 |
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{
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{
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{
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{
"status": "affected",
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{
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{
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{
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{
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{
"status": "affected",
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{
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{
"status": "affected",
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{
"status": "affected",
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{
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{
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{
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{
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{
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{
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{
"status": "affected",
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{
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{
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{
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{
"status": "affected",
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{
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{
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{
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{
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{
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"version": "MT6895"
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{
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"version": "MT6896"
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{
"status": "affected",
"version": "MT6897"
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{
"status": "affected",
"version": "MT6899"
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{
"status": "affected",
"version": "MT6980"
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{
"status": "affected",
"version": "MT6983"
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{
"status": "affected",
"version": "MT6985"
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{
"status": "affected",
"version": "MT6986D"
},
{
"status": "affected",
"version": "MT6988"
},
{
"status": "affected",
"version": "MT6989"
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{
"status": "affected",
"version": "MT6990"
},
{
"status": "affected",
"version": "MT6991"
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{
"status": "affected",
"version": "MT6993"
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{
"status": "affected",
"version": "MT8668"
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{
"status": "affected",
"version": "MT8673"
},
{
"status": "affected",
"version": "MT8675"
},
{
"status": "affected",
"version": "MT8676"
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{
"status": "affected",
"version": "MT8678"
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{
"status": "affected",
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{
"status": "affected",
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{
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{
"status": "affected",
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{
"status": "affected",
"version": "MT8791T"
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{
"status": "affected",
"version": "MT8792"
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{
"status": "affected",
"version": "MT8793"
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{
"status": "affected",
"version": "MT8795T"
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{
"status": "affected",
"version": "MT8797"
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{
"status": "affected",
"version": "MT8798"
},
{
"status": "affected",
"version": "MT8863"
},
{
"status": "affected",
"version": "MT8873"
},
{
"status": "affected",
"version": "MT8883"
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{
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Mitigation MIT-3
Requirements
Strategy: Language Selection
- 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.
Mitigation MIT-4.1
Architecture and Design
Strategy: Libraries or Frameworks
- 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.
Mitigation MIT-10
Operation
Build and Compilation
Strategy: Environment Hardening
- 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.
Mitigation MIT-9
Implementation
- Consider adhering to the following rules when allocating and managing an application's memory:
- Double check that your buffer is as large as you specify.
- 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.
Mitigation MIT-5
Implementation
Strategy: Input Validation
- Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
- When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
- Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
Mitigation MIT-15
Architecture and Design
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
Mitigation MIT-11
Operation
Build and Compilation
Strategy: Environment Hardening
- 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].
Mitigation MIT-12
Operation
Strategy: Environment Hardening
- 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].
Mitigation
Build and Compilation
Operation
Most mitigating technologies at the compiler or OS level to date address only a subset of buffer overflow problems and rarely provide complete protection against even that subset. It is good practice to implement strategies to increase the workload of an attacker, such as leaving the attacker to guess an unknown value that changes every program execution.
Mitigation MIT-13
Implementation
Replace unbounded copy functions with analogous functions that support length arguments, such as strcpy with strncpy. Create these if they are not available.
Mitigation MIT-21
Architecture and Design
Strategy: Enforcement by Conversion
When the set of acceptable objects, such as filenames or URLs, is limited or known, create a mapping from a set of fixed input values (such as numeric IDs) to the actual filenames or URLs, and reject all other inputs.
Mitigation MIT-17
Architecture and Design
Operation
Strategy: Environment Hardening
Run your code using the lowest privileges that are required to accomplish the necessary tasks [REF-76]. If possible, create isolated accounts with limited privileges that are only used for a single task. That way, a successful attack will not immediately give the attacker access to the rest of the software or its environment. For example, database applications rarely need to run as the database administrator, especially in day-to-day operations.
Mitigation MIT-22
Architecture and Design
Operation
Strategy: Sandbox or Jail
- Run the code in a "jail" or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict which files can be accessed in a particular directory or which commands can be executed by the software.
- OS-level examples include the Unix chroot jail, AppArmor, and SELinux. In general, managed code may provide some protection. For example, java.io.FilePermission in the Java SecurityManager allows the software to specify restrictions on file operations.
- This may not be a feasible solution, and it only limits the impact to the operating system; the rest of the application may still be subject to compromise.
- Be careful to avoid CWE-243 and other weaknesses related to jails.
CAPEC-10: Buffer Overflow via Environment Variables
This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the adversary finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
CAPEC-100: Overflow Buffers
Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an adversary. As a consequence, an adversary is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the adversaries' choice.
CAPEC-14: Client-side Injection-induced Buffer Overflow
This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service. This hostile service is created to deliver the correct content to the client software. For example, if the client-side application is a browser, the service will host a webpage that the browser loads.
CAPEC-24: Filter Failure through Buffer Overflow
In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
CAPEC-42: MIME Conversion
An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.
CAPEC-44: Overflow Binary Resource File
An attack of this type exploits a buffer overflow vulnerability in the handling of binary resources. Binary resources may include music files like MP3, image files like JPEG files, and any other binary file. These attacks may pass unnoticed to the client machine through normal usage of files, such as a browser loading a seemingly innocent JPEG file. This can allow the adversary access to the execution stack and execute arbitrary code in the target process.
CAPEC-45: Buffer Overflow via Symbolic Links
This type of attack leverages the use of symbolic links to cause buffer overflows. An adversary can try to create or manipulate a symbolic link file such that its contents result in out of bounds data. When the target software processes the symbolic link file, it could potentially overflow internal buffers with insufficient bounds checking.
CAPEC-46: Overflow Variables and Tags
This type of attack leverages the use of tags or variables from a formatted configuration data to cause buffer overflow. The adversary crafts a malicious HTML page or configuration file that includes oversized strings, thus causing an overflow.
CAPEC-47: Buffer Overflow via Parameter Expansion
In this attack, the target software is given input that the adversary knows will be modified and expanded in size during processing. This attack relies on the target software failing to anticipate that the expanded data may exceed some internal limit, thereby creating a buffer overflow.
CAPEC-67: String Format Overflow in syslog()
This attack targets applications and software that uses the syslog() function insecurely. If an application does not explicitely use a format string parameter in a call to syslog(), user input can be placed in the format string parameter leading to a format string injection attack. Adversaries can then inject malicious format string commands into the function call leading to a buffer overflow. There are many reported software vulnerabilities with the root cause being a misuse of the syslog() function.
CAPEC-8: Buffer Overflow in an API Call
This attack targets libraries or shared code modules which are vulnerable to buffer overflow attacks. An adversary who has knowledge of known vulnerable libraries or shared code can easily target software that makes use of these libraries. All clients that make use of the code library thus become vulnerable by association. This has a very broad effect on security across a system, usually affecting more than one software process.
CAPEC-9: Buffer Overflow in Local Command-Line Utilities
This attack targets command-line utilities available in a number of shells. An adversary can leverage a vulnerability found in a command-line utility to escalate privilege to root.
CAPEC-92: Forced Integer Overflow
This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.