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().
4106 vulnerabilities reference this CWE, most recent first.
CVE-2021-21077 (GCVE-0-2021-21077)
Vulnerability from cvelistv5 – Published: 2021-03-12 18:11 – Updated: 2025-04-23 19:43
VLAI
EPSS
VEX
Title
Adobe Animate heap-based overflow vulnerability
Summary
Adobe Animate version 21.0.3 (and earlier) is affected by a Heap-based Buffer Overflow vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-122 - Heap-based Buffer Overflow (CWE-122)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/animate… | x_refsource_MISC |
Impacted products
Date Public
2021-03-09 00:00
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CVE-2021-21017 (GCVE-0-2021-21017)
Vulnerability from cvelistv5 – Published: 2021-02-11 19:42 – Updated: 2025-10-21 23:35
VLAI
EPSS
VEX
Title
Acrobat Reader DC Heap-based Buffer Overflow Vulnerability Could Lead To Arbitrary Code Execution
Summary
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Severity
8.8 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-122 - Heap-based Buffer Overflow (CWE-122)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/acrobat… | x_refsource_MISC |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Acrobat Reader |
Affected:
unspecified , ≤ 2020.013.20074
(custom)
Affected: unspecified , ≤ 2020.001.30018 (custom) Affected: unspecified , ≤ 2017.011.30188 (custom) Affected: unspecified , ≤ None (custom) |
Date Public
2021-02-09 00:00
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CVE-2021-21006 (GCVE-0-2021-21006)
Vulnerability from cvelistv5 – Published: 2021-01-13 22:53 – Updated: 2025-04-23 19:46
VLAI
EPSS
VEX
Title
Heap buffer overflow when handling crafted font file could lead to arbitrary code execution
Summary
Adobe Photoshop version 22.1 (and earlier) is affected by a heap buffer overflow vulnerability when handling a specially crafted font file. Successful exploitation could lead to arbitrary code execution. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Severity
8.6 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-122 - Heap-based Buffer Overflow (CWE-122)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/photosh… | x_refsource_CONFIRM |
Date Public
2021-01-12 00:00
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CVE-2021-20587 (GCVE-0-2021-20587)
Vulnerability from cvelistv5 – Published: 2021-02-19 19:55 – Updated: 2025-06-12 23:11
VLAI
EPSS
VEX
Summary
Heap-based buffer overflow vulnerability in Mitsubishi Electric FA Engineering Software (CPU Module Logging Configuration Tool versions 1.112R and prior, CW Configurator versions 1.011M and prior, Data Transfer versions 3.44W and prior, EZSocket versions 5.4 and prior, FR Configurator all versions, FR Configurator SW3 all versions, FR Configurator2 versions 1.24A and prior, GT Designer3 Version1(GOT1000) versions 1.250L and prior, GT Designer3 Version1(GOT2000) versions 1.250L and prior, GT SoftGOT1000 Version3 versions 3.245F and prior, GT SoftGOT2000 Version1 versions 1.250L and prior, GX Configurator-DP versions 7.14Q and prior, GX Configurator-QP all versions, GX Developer versions 8.506C and prior, GX Explorer all versions, GX IEC Developer all versions, GX LogViewer versions 1.115U and prior, GX RemoteService-I all versions, GX Works2 versions 1.597X and prior, GX Works3 versions 1.070Y and prior, iQ Monozukuri ANDON (Data Transfer) versions 1.003D and prior, iQ Monozukuri Process Remote Monitoring (Data Transfer) versions 1.002C and prior, M_CommDTM-HART all versions, M_CommDTM-IO-Link versions 1.03D and prior, MELFA-Works versions 4.4 and prior, MELSEC WinCPU Setting Utility all versions, MELSOFT EM Software Development Kit (EM Configurator) versions 1.015R and prior, MELSOFT Navigator versions 2.74C and prior, MH11 SettingTool Version2 versions 2.004E and prior, MI Configurator versions 1.004E and prior, MT Works2 versions 1.167Z and prior, MX Component versions 5.001B and prior, Network Interface Board CC IE Control utility versions 1.29F and prior, Network Interface Board CC IE Field Utility versions 1.16S and prior, Network Interface Board CC-Link Ver.2 Utility versions 1.23Z and prior, Network Interface Board MNETH utility versions 34L and prior, PX Developer versions 1.53F and prior, RT ToolBox2 versions 3.73B and prior, RT ToolBox3 versions 1.82L and prior, Setting/monitoring tools for the C Controller module (SW4PVC-CCPU) versions 4.12N and prior, and SLMP Data Collector versions 1.04E and prior) allows a remote unauthenticated attacker to cause a DoS condition on the software products, and possibly to execute a malicious code on the personal computer running the software products although it has not been reproduced, by spoofing MELSEC, GOT or FREQROL and returning crafted reply packets.
Severity
7.5 (High)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://www.mitsubishielectric.com/psirt/vulnerab… | vendor-advisory |
| https://jvn.jp/vu/JVNVU92330101 | government-resource |
| https://www.cisa.gov/news-events/ics-advisories/i… | government-resource |
| https://www.mitsubishielectric.com/en/psirt/vulne… | vendor-advisoryx_transferred |
| https://jvn.jp/vu/JVNVU92330101/index.html | government-resourcex_transferred |
| https://us-cert.cisa.gov/ics/advisories/icsa-21-049-02 | government-resourcex_transferred |
Impacted products
41 products
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"vendor": "Mitsubishi Electric Corporation",
"versions": [
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"defaultStatus": "unaffected",
"product": "GX LogViewer",
"vendor": "Mitsubishi Electric Corporation",
"versions": [
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"status": "affected",
"version": "1.115U and prior"
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"defaultStatus": "unaffected",
"product": "GX RemoteService-I",
"vendor": "Mitsubishi Electric Corporation",
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"vendor": "Mitsubishi Electric Corporation",
"versions": [
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"product": "iQ Monozukuri ANDON (Data Transfer)",
"vendor": "Mitsubishi Electric Corporation",
"versions": [
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"status": "affected",
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"defaultStatus": "unaffected",
"product": "iQ Monozukuri Process Remote Monitoring (Data Transfer)",
"vendor": "Mitsubishi Electric Corporation",
"versions": [
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"status": "affected",
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},
{
"defaultStatus": "unaffected",
"product": "M_CommDTM-HART",
"vendor": "Mitsubishi Electric Corporation",
"versions": [
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"version": "all versions"
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},
{
"defaultStatus": "unaffected",
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"vendor": "Mitsubishi Electric Corporation",
"versions": [
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"status": "affected",
"version": "1.03D and prior"
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]
},
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"defaultStatus": "unaffected",
"product": "MELFA-Works",
"vendor": "Mitsubishi Electric Corporation",
"versions": [
{
"status": "affected",
"version": "4.4 and prior"
}
]
},
{
"defaultStatus": "unaffected",
"product": "MELSEC WinCPU Setting Utility",
"vendor": "Mitsubishi Electric Corporation",
"versions": [
{
"status": "affected",
"version": "all versions"
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]
},
{
"defaultStatus": "unaffected",
"product": "MELSOFT EM Software Development Kit (EM Configurator)",
"vendor": "Mitsubishi Electric Corporation",
"versions": [
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"status": "affected",
"version": "1.015R and prior"
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"vendor": "Mitsubishi Electric Corporation",
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"vendor": "Mitsubishi Electric Corporation",
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"status": "affected",
"version": "1.167Z and prior"
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"vendor": "Mitsubishi Electric Corporation",
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"versions": [
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"vendor": "Mitsubishi Electric Corporation",
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CVE-2021-20043 (GCVE-0-2021-20043)
Vulnerability from cvelistv5 – Published: 2021-12-08 09:55 – Updated: 2024-08-03 17:30
VLAI
EPSS
VEX
Summary
A Heap-based buffer overflow vulnerability in SonicWall SMA100 getBookmarks method allows a remote authenticated attacker to potentially execute code as the nobody user in the appliance. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances.
Severity
No CVSS data available.
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://psirt.global.sonicwall.com/vuln-detail/SN… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SonicWall | SonicWall SMA100 |
Affected:
10.2.0.8-37sv and earlier
Affected: 10.2.1.1-19sv and earlier Affected: 10.2.1.2-24sv and earlier |
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CVE-2021-4136 (GCVE-0-2021-4136)
Vulnerability from cvelistv5 – Published: 2021-12-19 17:00 – Updated: 2024-08-03 17:16
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow in vim/vim
Summary
vim is vulnerable to Heap-based Buffer Overflow
Severity
7.3 (High)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
12 references
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|---|---|
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| https://github.com/vim/vim/commit/605ec91e5a7330d… | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| http://www.openwall.com/lists/oss-security/2022/01/15/1 | mailing-listx_refsource_MLIST |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://support.apple.com/kb/HT213183 | x_refsource_CONFIRM |
| http://seclists.org/fulldisclosure/2022/Mar/29 | mailing-listx_refsource_FULLDISC |
| https://support.apple.com/kb/HT213256 | x_refsource_CONFIRM |
| http://seclists.org/fulldisclosure/2022/May/35 | mailing-listx_refsource_FULLDISC |
| https://support.apple.com/kb/HT213343 | x_refsource_CONFIRM |
| http://seclists.org/fulldisclosure/2022/Jul/14 | mailing-listx_refsource_FULLDISC |
| https://security.gentoo.org/glsa/202208-32 | vendor-advisoryx_refsource_GENTOO |
Impacted products
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CVE-2021-4019 (GCVE-0-2021-4019)
Vulnerability from cvelistv5 – Published: 2021-12-01 00:00 – Updated: 2025-11-03 20:33
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow in vim/vim
Summary
vim is vulnerable to Heap-based Buffer Overflow
Severity
7.1 (High)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
9 references
Impacted products
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CVE-2021-3984 (GCVE-0-2021-3984)
Vulnerability from cvelistv5 – Published: 2021-12-01 00:00 – Updated: 2024-08-03 17:09
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow in vim/vim
Summary
vim is vulnerable to Heap-based Buffer Overflow
Severity
7.3 (High)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
7 references
Impacted products
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CVE-2021-3973 (GCVE-0-2021-3973)
Vulnerability from cvelistv5 – Published: 2021-11-19 11:35 – Updated: 2024-08-03 17:09
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow in vim/vim
Summary
vim is vulnerable to Heap-based Buffer Overflow
Severity
7.3 (High)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
7 references
| URL | Tags |
|---|---|
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| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| http://www.openwall.com/lists/oss-security/2022/01/15/1 | mailing-listx_refsource_MLIST |
| https://lists.debian.org/debian-lts-announce/2022… | mailing-listx_refsource_MLIST |
| https://security.gentoo.org/glsa/202208-32 | vendor-advisoryx_refsource_GENTOO |
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CVE-2021-3968 (GCVE-0-2021-3968)
Vulnerability from cvelistv5 – Published: 2021-11-19 11:40 – Updated: 2024-08-03 17:09
VLAI
EPSS
VEX
Title
Heap-based Buffer Overflow in vim/vim
Summary
vim is vulnerable to Heap-based Buffer Overflow
Severity
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://huntr.dev/bounties/00d62924-a7b4-4a61-ba2… | x_refsource_CONFIRM |
| https://github.com/vim/vim/commit/a062006b9de0b29… | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| http://www.openwall.com/lists/oss-security/2022/01/15/1 | mailing-listx_refsource_MLIST |
| https://security.gentoo.org/glsa/202208-32 | vendor-advisoryx_refsource_GENTOO |
Impacted products
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"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
"version": "3.0"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-122 Heap-based Buffer Overflow"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://huntr.dev/bounties/00d62924-a7b4-4a61-ba29-acab2eaa1528",
"refsource": "CONFIRM",
"url": "https://huntr.dev/bounties/00d62924-a7b4-4a61-ba29-acab2eaa1528"
},
{
"name": "https://github.com/vim/vim/commit/a062006b9de0b2947ab5fb376c6e67ef92a8cd69",
"refsource": "MISC",
"url": "https://github.com/vim/vim/commit/a062006b9de0b2947ab5fb376c6e67ef92a8cd69"
},
{
"name": "FEDORA-2021-5cd9df120e",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IH2LS2DXBTYOCWGAKFMBF3HTWWXPBEFL/"
},
{
"name": "FEDORA-2021-b0ac29efb1",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FNXY7T5OORA7UJIMGSJBGHFMU6UZWS6P/"
},
{
"name": "[oss-security] 20220114 Re: 3 new CVE\u0027s in vim",
"refsource": "MLIST",
"url": "http://www.openwall.com/lists/oss-security/2022/01/15/1"
},
{
"name": "GLSA-202208-32",
"refsource": "GENTOO",
"url": "https://security.gentoo.org/glsa/202208-32"
}
]
},
"source": {
"advisory": "00d62924-a7b4-4a61-ba29-acab2eaa1528",
"discovery": "EXTERNAL"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
"assignerShortName": "@huntrdev",
"cveId": "CVE-2021-3968",
"datePublished": "2021-11-19T11:40:12.000Z",
"dateReserved": "2021-11-17T00:00:00.000Z",
"dateUpdated": "2024-08-03T17:09:09.784Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
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.