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().
4096 vulnerabilities reference this CWE, most recent first.
GHSA-4P57-RRMC-HXH2
Vulnerability from github – Published: 2023-07-05 18:30 – Updated: 2024-04-04 05:23A heap-based buffer overflow vulnerability exists in the Sequence::DrawText functionality of Diagon v1.0.139. A specially crafted network request can lead to a heap buffer overflow. An attacker can send a network request to trigger this vulnerability.
{
"affected": [],
"aliases": [
"CVE-2023-27390"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-07-05T16:15:09Z",
"severity": "HIGH"
},
"details": "A heap-based buffer overflow vulnerability exists in the Sequence::DrawText functionality of Diagon v1.0.139. A specially crafted network request can lead to a heap buffer overflow. An attacker can send a network request to trigger this vulnerability.",
"id": "GHSA-4p57-rrmc-hxh2",
"modified": "2024-04-04T05:23:44Z",
"published": "2023-07-05T18:30:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-27390"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2023-1744"
},
{
"type": "WEB",
"url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1744"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-4PG5-C9WR-3P6W
Vulnerability from github – Published: 2025-07-08 18:31 – Updated: 2025-07-08 18:31Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code over an adjacent network.
{
"affected": [],
"aliases": [
"CVE-2025-49691"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-08T17:15:55Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code over an adjacent network.",
"id": "GHSA-4pg5-c9wr-3p6w",
"modified": "2025-07-08T18:31:47Z",
"published": "2025-07-08T18:31:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-49691"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49691"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-4PMM-4FF4-V6HC
Vulnerability from github – Published: 2026-07-01 00:34 – Updated: 2026-07-01 15:35Integer overflow in Chromecast in Google Chrome prior to 150.0.7871.47 allowed a local attacker to execute arbitrary code via malicious network traffic. (Chromium security severity: Medium)
{
"affected": [],
"aliases": [
"CVE-2026-13884"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-30T23:17:02Z",
"severity": "HIGH"
},
"details": "Integer overflow in Chromecast in Google Chrome prior to 150.0.7871.47 allowed a local attacker to execute arbitrary code via malicious network traffic. (Chromium security severity: Medium)",
"id": "GHSA-4pmm-4ff4-v6hc",
"modified": "2026-07-01T15:35:02Z",
"published": "2026-07-01T00:34:05Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-13884"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0175352312.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/500077014"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-4PRX-8MGQ-J2GW
Vulnerability from github – Published: 2024-07-09 18:30 – Updated: 2024-07-09 18:30SQL Server Native Client OLE DB Provider Remote Code Execution Vulnerability
{
"affected": [],
"aliases": [
"CVE-2024-35256"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-07-09T17:15:17Z",
"severity": "HIGH"
},
"details": "SQL Server Native Client OLE DB Provider Remote Code Execution Vulnerability",
"id": "GHSA-4prx-8mgq-j2gw",
"modified": "2024-07-09T18:30:50Z",
"published": "2024-07-09T18:30:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-35256"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-35256"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-4PX5-4P3V-7568
Vulnerability from github – Published: 2022-03-16 00:00 – Updated: 2025-06-25 21:30Heap buffer overflow in Clickhouse's LZ4 compression codec when parsing a malicious query. There is no verification that the copy operations in the LZ4::decompressImpl loop and especially the arbitrary copy operation wildCopy(op, ip, copy_end), don’t exceed the destination buffer’s limits.
{
"affected": [],
"aliases": [
"CVE-2021-43304"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-03-14T23:15:00Z",
"severity": "HIGH"
},
"details": "Heap buffer overflow in Clickhouse\u0027s LZ4 compression codec when parsing a malicious query. There is no verification that the copy operations in the LZ4::decompressImpl loop and especially the arbitrary copy operation wildCopy\u003ccopy_amount\u003e(op, ip, copy_end), don\u2019t exceed the destination buffer\u2019s limits.",
"id": "GHSA-4px5-4p3v-7568",
"modified": "2025-06-25T21:30:30Z",
"published": "2022-03-16T00:00:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-43304"
},
{
"type": "WEB",
"url": "https://jfrog.com/blog/7-rce-and-dos-vulnerabilities-found-in-clickhouse-dbms"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00002.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-4Q22-422G-M4PJ
Vulnerability from github – Published: 2024-06-13 18:31 – Updated: 2024-10-03 21:56A flaw was discovered in Elasticsearch, affecting document ingestion when an index template contains a dynamic field mapping of “passthrough” type. Under certain circumstances, ingesting documents in this index would cause a StackOverflow exception to be thrown and ultimately lead to a Denial of Service. Note that passthrough fields is an experimental feature.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.elasticsearch:elasticsearch"
},
"ranges": [
{
"events": [
{
"introduced": "8.13.1"
},
{
"fixed": "8.14.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-37280"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": true,
"github_reviewed_at": "2024-06-13T22:03:51Z",
"nvd_published_at": "2024-06-13T17:15:50Z",
"severity": "MODERATE"
},
"details": "A flaw was discovered in Elasticsearch, affecting document ingestion when an index template contains a dynamic field mapping of \u201cpassthrough\u201d type. Under certain circumstances, ingesting documents in this index would cause a StackOverflow exception to be thrown and ultimately lead to a Denial of Service. Note that passthrough fields is an experimental feature.",
"id": "GHSA-4q22-422g-m4pj",
"modified": "2024-10-03T21:56:24Z",
"published": "2024-06-13T18:31:58Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-37280"
},
{
"type": "WEB",
"url": "https://discuss.elastic.co/t/elasticsearch-8-14-0-security-update-esa-2024-14/361007"
},
{
"type": "PACKAGE",
"url": "https://github.com/elastic/elasticsearch"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "Elasticsearch StackOverflow vulnerability"
}
GHSA-4Q9X-QFVM-P5XC
Vulnerability from github – Published: 2025-11-04 18:31 – Updated: 2025-11-04 18:31An issue was discovered in NAS in Samsung Mobile Processor, Wearable Processor, and Modem Exynos 980, 990, 850, 2100, 1280, 2200, 1330, 1380, 1480, 2400, 1580, 2500, W920, W930, W1000, Modem 5123, Modem 5300, and Modem 5400. The function used to send a multiple-payloads message (including an SMS message) lacks bounds checking, which can lead to a heap overflow.
{
"affected": [],
"aliases": [
"CVE-2025-54329"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-11-04T17:16:22Z",
"severity": "HIGH"
},
"details": "An issue was discovered in NAS in Samsung Mobile Processor, Wearable Processor, and Modem Exynos 980, 990, 850, 2100, 1280, 2200, 1330, 1380, 1480, 2400, 1580, 2500, W920, W930, W1000, Modem 5123, Modem 5300, and Modem 5400. The function used to send a multiple-payloads message (including an SMS message) lacks bounds checking, which can lead to a heap overflow.",
"id": "GHSA-4q9x-qfvm-p5xc",
"modified": "2025-11-04T18:31:58Z",
"published": "2025-11-04T18:31:58Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-54329"
},
{
"type": "WEB",
"url": "https://semiconductor.samsung.com/support/quality-support/product-security-updates"
},
{
"type": "WEB",
"url": "https://semiconductor.samsung.com/support/quality-support/product-security-updates/cve-2025-54329"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-4QG4-F998-WJMM
Vulnerability from github – Published: 2026-05-26 15:32 – Updated: 2026-05-26 15:32The VPN service may mishandle an unexpected IKE fragment value received on the IKE port 500/UDP during the early stage of a connection attempt. This can cause the service to terminate unexpectedly, resulting in denial of service (temporary disruption of VPN-related functionality).
{
"affected": [],
"aliases": [
"CVE-2026-48131"
],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-26T14:16:38Z",
"severity": "HIGH"
},
"details": "The VPN service may mishandle an unexpected IKE fragment value received on the IKE port 500/UDP during the early stage of a connection attempt. This can cause the service to terminate unexpectedly, resulting in denial of service (temporary disruption of VPN-related functionality).",
"id": "GHSA-4qg4-f998-wjmm",
"modified": "2026-05-26T15:32:10Z",
"published": "2026-05-26T15:32:10Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-48131"
},
{
"type": "WEB",
"url": "https://support.checkpoint.com/results/sk/sk184981"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-4QGH-57C7-QFQ2
Vulnerability from github – Published: 2024-05-15 21:31 – Updated: 2024-09-20 15:30Buffer overflow in some Zoom Workplace Apps and SDK’s may allow an authenticated user to conduct a denial of service via network access.
{
"affected": [],
"aliases": [
"CVE-2024-27243"
],
"database_specific": {
"cwe_ids": [
"CWE-119",
"CWE-122"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-15T21:15:07Z",
"severity": "MODERATE"
},
"details": "Buffer overflow in some Zoom Workplace Apps and SDK\u2019s may allow an authenticated user to conduct a denial of service via network access.",
"id": "GHSA-4qgh-57c7-qfq2",
"modified": "2024-09-20T15:30:35Z",
"published": "2024-05-15T21:31:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-27243"
},
{
"type": "WEB",
"url": "https://www.zoom.com/en/trust/security-bulletin/zsb-24014"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-4QPC-HPHM-XPMC
Vulnerability from github – Published: 2022-03-09 00:00 – Updated: 2025-08-12 12:30A vulnerability has been identified in RUGGEDCOM ROS M2100 (All versions < V5.6.0), RUGGEDCOM ROS RMC8388 devices (All versions < V5.6.0), RUGGEDCOM ROS RS416v2 (All versions < V5.6.0), RUGGEDCOM ROS RS900G (All versions < V5.6.0), RUGGEDCOM ROS RS900G (32M) (All versions < V5.6.0), RUGGEDCOM ROS RSG2100 (32M) V5.X (All versions < V5.6.0), RUGGEDCOM ROS RSG2100P (All versions < V5.6.0), RUGGEDCOM ROS RSG2100P (32M) V5.X (All versions < V5.6.0), RUGGEDCOM ROS RSG2288 V5.X (All versions < V5.6.0), RUGGEDCOM ROS RSG2300 V5.X (All versions < V5.6.0), RUGGEDCOM ROS RSG2300P V5.X (All versions < V5.6.0), RUGGEDCOM ROS RSG2488 V5.X (All versions < V5.6.0), RUGGEDCOM ROS RSG900 V5.X (All versions < V5.6.0), RUGGEDCOM ROS RSG920P V5.X (All versions < V5.6.0), RUGGEDCOM ROS RSL910 (All versions < V5.6.0), RUGGEDCOM ROS RST2228 (All versions < V5.6.0), RUGGEDCOM ROS RST916C (All versions < V5.6.0), RUGGEDCOM ROS RST916P (All versions < V5.6.0). Within a third-party component, whenever memory allocation is requested, the out of bound size is not checked. Therefore, if size exceeding the expected allocation is assigned, it could allocate a smaller buffer instead. If an attacker were to exploit this, they could cause a heap overflow.
{
"affected": [],
"aliases": [
"CVE-2021-42018"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-03-08T12:15:00Z",
"severity": "CRITICAL"
},
"details": "A vulnerability has been identified in RUGGEDCOM ROS M2100 (All versions \u003c V5.6.0), RUGGEDCOM ROS RMC8388 devices (All versions \u003c V5.6.0), RUGGEDCOM ROS RS416v2 (All versions \u003c V5.6.0), RUGGEDCOM ROS RS900G (All versions \u003c V5.6.0), RUGGEDCOM ROS RS900G (32M) (All versions \u003c V5.6.0), RUGGEDCOM ROS RSG2100 (32M) V5.X (All versions \u003c V5.6.0), RUGGEDCOM ROS RSG2100P (All versions \u003c V5.6.0), RUGGEDCOM ROS RSG2100P (32M) V5.X (All versions \u003c V5.6.0), RUGGEDCOM ROS RSG2288 V5.X (All versions \u003c V5.6.0), RUGGEDCOM ROS RSG2300 V5.X (All versions \u003c V5.6.0), RUGGEDCOM ROS RSG2300P V5.X (All versions \u003c V5.6.0), RUGGEDCOM ROS RSG2488 V5.X (All versions \u003c V5.6.0), RUGGEDCOM ROS RSG900 V5.X (All versions \u003c V5.6.0), RUGGEDCOM ROS RSG920P V5.X (All versions \u003c V5.6.0), RUGGEDCOM ROS RSL910 (All versions \u003c V5.6.0), RUGGEDCOM ROS RST2228 (All versions \u003c V5.6.0), RUGGEDCOM ROS RST916C (All versions \u003c V5.6.0), RUGGEDCOM ROS RST916P (All versions \u003c V5.6.0). Within a third-party component, whenever memory allocation is requested, the out of bound size is not checked. Therefore, if size exceeding the expected allocation is assigned, it could allocate a smaller buffer instead. If an attacker were to exploit this, they could cause a heap overflow.",
"id": "GHSA-4qpc-hphm-xpmc",
"modified": "2025-08-12T12:30:31Z",
"published": "2022-03-09T00:00:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-42018"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-256353.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-256353.pdf"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation
Pre-design: Use a language or compiler that performs automatic bounds checking.
Mitigation
Use an abstraction library to abstract away risky APIs. Not a complete solution.
Mitigation MIT-10
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
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
Implement and perform bounds checking on input.
Mitigation
Strategy: Libraries or Frameworks
Do not use dangerous functions such as gets. Look for their safe equivalent, which checks for the boundary.
Mitigation
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.