Common Weakness Enumeration
CWE-122
AllowedHeap-based Buffer Overflow
Abstraction: Variant · Status: Draft
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
6349 vulnerabilities reference this CWE, most recent first.
CVE-2019-5436 (GCVE-0-2019-5436)
Vulnerability from cvelistv5 – Published: 2019-05-28 18:47 – Updated: 2026-10-14 06:35
VLAI
EPSS
VEX
Summary
A heap buffer overflow in the TFTP receiving code allows for DoS or arbitrary code execution in libcurl versions 7.19.4 through 7.64.1.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-15 20:51 UTC
CWE
- CWE-122 - Heap Overflow (CWE-122)
Assigner
References
15 references
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| curl | curl |
Affected:
Fixed in 7.65.0
|
|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.0 , < V3.1.5
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.0 , < V3.1.5
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.0 , < V3.1.5
(custom)
|
Date Public
2019-05-22 00:00
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CVE-2019-5154 (GCVE-0-2019-5154)
Vulnerability from cvelistv5 – Published: 2019-12-11 23:47 – Updated: 2024-08-04 19:47
VLAI
EPSS
VEX
Summary
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Severity
8.8 (High)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://talosintelligence.com/vulnerability_repor… | x_refsource_CONFIRM |
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CVE-2019-5125 (GCVE-0-2019-5125)
Vulnerability from cvelistv5 – Published: 2019-11-06 19:35 – Updated: 2024-08-04 19:47
VLAI
EPSS
VEX
Summary
An exploitable heap overflow vulnerability exists in the JPEG2000 parsing functionality of LEADTOOLS 20. A specially crafted J2K image file can cause an out of bounds write of a heap buffer, potentially resulting in code execution. An attack can specially craft a J2K image to trigger this vulnerability.
Severity
8.8 (High)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
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| URL | Tags |
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CVE-2019-5058 (GCVE-0-2019-5058)
Vulnerability from cvelistv5 – Published: 2019-07-31 16:49 – Updated: 2024-08-04 19:47
VLAI
EPSS
VEX
Summary
An exploitable code execution vulnerability exists in the XCF image rendering functionality of SDL2_image 2.0.4. A specially crafted XCF image can cause a heap overflow, resulting in code execution. An attacker can display a specially crafted image to trigger this vulnerability.
Severity
8.8 (High)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
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|---|---|
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CVE-2019-5057 (GCVE-0-2019-5057)
Vulnerability from cvelistv5 – Published: 2019-07-31 16:48 – Updated: 2024-08-04 19:47
VLAI
EPSS
VEX
Summary
An exploitable code execution vulnerability exists in the PCX image-rendering functionality of SDL2_image 2.0.4. A specially crafted PCX image can cause a heap overflow, resulting in code execution. An attacker can display a specially crafted image to trigger this vulnerability.
Severity
8.8 (High)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
5 references
| URL | Tags |
|---|---|
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
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| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
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CVE-2019-5050 (GCVE-0-2019-5050)
Vulnerability from cvelistv5 – Published: 2019-10-09 20:55 – Updated: 2024-08-04 19:47
VLAI
EPSS
VEX
Summary
A specifically crafted PDF file can lead to a heap corruption when opened in NitroPDF 12.12.1.522. With careful memory manipulation, this can lead to arbitrary code execution. In order to trigger this vulnerability, the victim would need to open the malicious file.
Severity
8.8 (High)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
1 reference
| URL | Tags |
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CVE-2019-5048 (GCVE-0-2019-5048)
Vulnerability from cvelistv5 – Published: 2019-10-09 20:55 – Updated: 2024-08-04 19:47
VLAI
EPSS
VEX
Summary
A specifically crafted PDF file can lead to a heap corruption when opened in NitroPDF 12.12.1.522. With careful memory manipulation, this can lead to arbitrary code execution. In order to trigger this vulnerability, the victim would need to open the malicious file.
Severity
8.8 (High)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
1 reference
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CVE-2019-5046 (GCVE-0-2019-5046)
Vulnerability from cvelistv5 – Published: 2019-10-09 20:55 – Updated: 2024-08-04 19:47
VLAI
EPSS
VEX
Summary
A specifically crafted jpeg2000 file embedded in a PDF file can lead to a heap corruption when opening a PDF document in NitroPDF 12.12.1.522. With careful memory manipulation, this can lead to arbitrary code execution. In order to trigger this vulnerability, the victim would need to open the malicious file.
Severity
8.8 (High)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
1 reference
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CVE-2019-5045 (GCVE-0-2019-5045)
Vulnerability from cvelistv5 – Published: 2019-10-09 20:40 – Updated: 2024-08-04 19:47
VLAI
EPSS
VEX
Summary
A specifically crafted jpeg2000 file embedded in a PDF file can lead to a heap corruption when opening a PDF document in NitroPDF 12.12.1.522. With careful memory manipulation, this can lead to arbitrary code execution. In order to trigger this vulnerability, the victim would need to open the malicious file.
Severity
8.8 (High)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://talosintelligence.com/vulnerability_repor… | x_refsource_MISC |
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CVE-2019-5039 (GCVE-0-2019-5039)
Vulnerability from cvelistv5 – Published: 2019-08-20 20:39 – Updated: 2024-08-04 19:40
VLAI
EPSS
VEX
Summary
An exploitable command execution vulnerability exists in the ASN1 certificate writing functionality of Openweave-core version 4.0.2. A specially crafted weave certificate can trigger a heap-based buffer overflow, resulting in code execution. An attacker can craft a weave certificate to trigger this vulnerability.
Severity
7.5 (High)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://talosintelligence.com/vulnerability_repor… | x_refsource_MISC |
Impacted products
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Mitigation
Pre-design: Use a language or compiler that performs automatic bounds checking.
Mitigation
Architecture and Design
Use an abstraction library to abstract away risky APIs. Not a complete solution.
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-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
Implementation
Implement and perform bounds checking on input.
Mitigation
Implementation
Strategy: Libraries or Frameworks
Do not use dangerous functions such as gets. Look for their safe equivalent, which checks for the boundary.
Mitigation
Operation
Use OS-level preventative functionality. This is not a complete solution, but it provides some defense in depth.
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.