Common Weakness Enumeration
CWE-787
Allowed-with-ReviewOut-of-bounds Write
Abstraction: Base · Status: Draft
The product writes data past the end, or before the beginning, of the intended buffer.
15321 vulnerabilities reference this CWE, most recent first.
GHSA-CQVR-3GQR-WJCW
Vulnerability from github – Published: 2022-05-17 02:32 – Updated: 2025-04-20 03:35
VLAI
Details
Adobe Acrobat Reader versions 11.0.19 and earlier, 15.006.30280 and earlier, 15.023.20070 and earlier have an exploitable memory corruption vulnerability in the image conversion engine, related to parsing of GIF files. Successful exploitation could lead to arbitrary code execution.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2017-3050"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-04-12T14:59:00Z",
"severity": "HIGH"
},
"details": "Adobe Acrobat Reader versions 11.0.19 and earlier, 15.006.30280 and earlier, 15.023.20070 and earlier have an exploitable memory corruption vulnerability in the image conversion engine, related to parsing of GIF files. Successful exploitation could lead to arbitrary code execution.",
"id": "GHSA-cqvr-3gqr-wjcw",
"modified": "2025-04-20T03:35:56Z",
"published": "2022-05-17T02:32:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-3050"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/acrobat/apsb17-11.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/97556"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1038228"
},
{
"type": "WEB",
"url": "http://www.zerodayinitiative.com/advisories/ZDI-17-274"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-CQWC-52GW-4X53
Vulnerability from github – Published: 2025-09-16 15:32 – Updated: 2025-12-02 21:31
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
perf: Avoid undefined behavior from stopping/starting inactive events
Calling pmu->start()/stop() on perf events in PERF_EVENT_STATE_OFF can leave event->hw.idx at -1. When PMU drivers later attempt to use this negative index as a shift exponent in bitwise operations, it leads to UBSAN shift-out-of-bounds reports.
The issue is a logical flaw in how event groups handle throttling when some members are intentionally disabled. Based on the analysis and the reproducer provided by Mark Rutland (this issue on both arm64 and x86-64).
The scenario unfolds as follows:
- A group leader event is configured with a very aggressive sampling period (e.g., sample_period = 1). This causes frequent interrupts and triggers the throttling mechanism.
- A child event in the same group is created in a disabled state (.disabled = 1). This event remains in PERF_EVENT_STATE_OFF. Since it hasn't been scheduled onto the PMU, its event->hw.idx remains initialized at -1.
- When throttling occurs, perf_event_throttle_group() and later perf_event_unthrottle_group() iterate through all siblings, including the disabled child event.
- perf_event_throttle()/unthrottle() are called on this inactive child event, which then call event->pmu->start()/stop().
- The PMU driver receives the event with hw.idx == -1 and attempts to use it as a shift exponent. e.g., in macros like PMCNTENSET(idx), leading to the UBSAN report.
The throttling mechanism attempts to start/stop events that are not actively scheduled on the hardware.
Move the state check into perf_event_throttle()/perf_event_unthrottle() so that inactive events are skipped entirely. This ensures only active events with a valid hw.idx are processed, preventing undefined behavior and silencing UBSAN warnings. The corrected check ensures true before proceeding with PMU operations.
The problem can be reproduced with the syzkaller reproducer:
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2025-39821"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-16T13:15:59Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf: Avoid undefined behavior from stopping/starting inactive events\n\nCalling pmu-\u003estart()/stop() on perf events in PERF_EVENT_STATE_OFF can\nleave event-\u003ehw.idx at -1. When PMU drivers later attempt to use this\nnegative index as a shift exponent in bitwise operations, it leads to UBSAN\nshift-out-of-bounds reports.\n\nThe issue is a logical flaw in how event groups handle throttling when some\nmembers are intentionally disabled. Based on the analysis and the\nreproducer provided by Mark Rutland (this issue on both arm64 and x86-64).\n\nThe scenario unfolds as follows:\n\n 1. A group leader event is configured with a very aggressive sampling\n period (e.g., sample_period = 1). This causes frequent interrupts and\n triggers the throttling mechanism.\n 2. A child event in the same group is created in a disabled state\n (.disabled = 1). This event remains in PERF_EVENT_STATE_OFF.\n Since it hasn\u0027t been scheduled onto the PMU, its event-\u003ehw.idx remains\n initialized at -1.\n 3. When throttling occurs, perf_event_throttle_group() and later\n perf_event_unthrottle_group() iterate through all siblings, including\n the disabled child event.\n 4. perf_event_throttle()/unthrottle() are called on this inactive child\n event, which then call event-\u003epmu-\u003estart()/stop().\n 5. The PMU driver receives the event with hw.idx == -1 and attempts to\n use it as a shift exponent. e.g., in macros like PMCNTENSET(idx),\n leading to the UBSAN report.\n\nThe throttling mechanism attempts to start/stop events that are not\nactively scheduled on the hardware.\n\nMove the state check into perf_event_throttle()/perf_event_unthrottle() so\nthat inactive events are skipped entirely. This ensures only active events\nwith a valid hw.idx are processed, preventing undefined behavior and\nsilencing UBSAN warnings. The corrected check ensures true before\nproceeding with PMU operations.\n\nThe problem can be reproduced with the syzkaller reproducer:",
"id": "GHSA-cqwc-52gw-4x53",
"modified": "2025-12-02T21:31:27Z",
"published": "2025-09-16T15:32:35Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39821"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b64fdd422a85025b5e91ead794db9d3ef970e369"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d689135aa9c5e4e0eab5a92bbe35dab0c8d6677f"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-CQWQ-WJ9G-QGRX
Vulnerability from github – Published: 2024-03-11 21:31 – Updated: 2025-02-18 15:31
VLAI
Details
Android kernel allows Remote code execution.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2024-27227"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-03-11T19:15:48Z",
"severity": "CRITICAL"
},
"details": "Android kernel allows Remote code execution.",
"id": "GHSA-cqwq-wj9g-qgrx",
"modified": "2025-02-18T15:31:05Z",
"published": "2024-03-11T21:31:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-27227"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/pixel/2024-03-01"
}
],
"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"
}
]
}
GHSA-CR25-9PC8-6QV3
Vulnerability from github – Published: 2022-05-14 01:58 – Updated: 2022-05-14 01:58
VLAI
Details
Fuji Electric V-Server 4.0.3.0 and prior, Several out-of-bounds write vulnerabilities have been identified, which may allow remote code execution.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2018-14815"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-09-26T20:29:00Z",
"severity": "CRITICAL"
},
"details": "Fuji Electric V-Server 4.0.3.0 and prior, Several out-of-bounds write vulnerabilities have been identified, which may allow remote code execution.",
"id": "GHSA-cr25-9pc8-6qv3",
"modified": "2022-05-14T01:58:46Z",
"published": "2022-05-14T01:58:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-14815"
},
{
"type": "WEB",
"url": "https://ics-cert.us-cert.gov/advisories/ICSA-18-254-01"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/105341"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-CR29-8XJ3-V4F9
Vulnerability from github – Published: 2023-01-23 15:30 – Updated: 2023-02-01 15:30
VLAI
Details
** UNSUPPORTED WHEN ASSIGNED ** TrendNet Wireless AC Easy-Upgrader TEW-820AP v1.0R, firmware version 1.01.B01 was discovered to contain a stack overflow via the submit-url parameter at /formSysLog. This vulnerability allows attackers to execute arbitrary code via a crafted payload. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2023-24098"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-01-23T15:15:00Z",
"severity": "HIGH"
},
"details": "** UNSUPPORTED WHEN ASSIGNED ** TrendNet Wireless AC Easy-Upgrader TEW-820AP v1.0R, firmware version 1.01.B01 was discovered to contain a stack overflow via the submit-url parameter at /formSysLog. This vulnerability allows attackers to execute arbitrary code via a crafted payload. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.",
"id": "GHSA-cr29-8xj3-v4f9",
"modified": "2023-02-01T15:30:25Z",
"published": "2023-01-23T15:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-24098"
},
{
"type": "WEB",
"url": "https://github.com/chunklhit/cve/blob/master/TRENDNet/TEW-820AP/04/README.md"
}
],
"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-CR2W-747Q-47QC
Vulnerability from github – Published: 2026-06-16 09:32 – Updated: 2026-07-23 12:32
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
net/sched: fix pedit partial COW leading to page cache corruption
tcf_pedit_act() computes the COW range for skb_ensure_writable() once before the key loop using tcfp_off_max_hint, but the hint does not account for the runtime header offset added by typed keys. This can leave part of the write region un-COW'd.
Fix by moving skb_ensure_writable() inside the per-key loop where the actual write offset is known, and add overflow checking on the offset arithmetic. For negative offsets (e.g. Ethernet header edits at ingress), use skb_cow() to COW the headroom instead. Guard offset_valid() against INT_MIN, where negation is undefined.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-46331"
],
"database_specific": {
"cwe_ids": [
"CWE-190",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-16T08:16:23Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: fix pedit partial COW leading to page cache corruption\n\ntcf_pedit_act() computes the COW range for skb_ensure_writable()\nonce before the key loop using tcfp_off_max_hint, but the hint does\nnot account for the runtime header offset added by typed keys. This\ncan leave part of the write region un-COW\u0027d.\n\nFix by moving skb_ensure_writable() inside the per-key loop where\nthe actual write offset is known, and add overflow checking on the\noffset arithmetic. For negative offsets (e.g. Ethernet header edits\nat ingress), use skb_cow() to COW the headroom instead. Guard\noffset_valid() against INT_MIN, where negation is undefined.",
"id": "GHSA-cr2w-747q-47qc",
"modified": "2026-07-23T12:32:21Z",
"published": "2026-06-16T09:32:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46331"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:27288"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:33221"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:33222"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:33223"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:33224"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:33225"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:33666"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:34048"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:34098"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:40021"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-46331"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2479492"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2bec122b9fb91507a758ab5e3e5c4fbe7cb3f61b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3dee9d0c198faeb95d052c1b94c2958751a28512"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/544d857b42a1734b923040e13aa61a6fd4746cf2"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/899ee91156e57784090c5565e4f31bd7dbffbc5a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a071e057518decc5e3bec89855758f5f8786f2c5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b198ed4e52580a7238c7c7082f03906f8b310313"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b685d6ef6f07a3b5ce814565a25f39f2157538a5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d5d01d35a5a7d36f7cb679b67d9cbdd5205672dc"
},
{
"type": "WEB",
"url": "https://github.com/sgkdev/packet_edit_meme/tree/main"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46331.json"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:27353"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:27354"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:27355"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:27704"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:27705"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:27706"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:27707"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:27708"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:27709"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:27713"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:27731"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:27789"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:28887"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:28962"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:29080"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:29794"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:29799"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:29833"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:29856"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:29863"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:33219"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:33220"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-CR43-59P5-VX5P
Vulnerability from github – Published: 2022-05-24 19:20 – Updated: 2022-05-24 19:20
VLAI
Details
A User Mode Write AV in Editor!TMethodImplementationIntercept+0x54dcec of WildBit Viewer v6.6 allows attackers to cause a denial of service (DoS) via a crafted tga file.
{
"affected": [],
"aliases": [
"CVE-2020-23897"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-11-10T22:15:00Z",
"severity": "MODERATE"
},
"details": "A User Mode Write AV in Editor!TMethodImplementationIntercept+0x54dcec of WildBit Viewer v6.6 allows attackers to cause a denial of service (DoS) via a crafted tga file.",
"id": "GHSA-cr43-59p5-vx5p",
"modified": "2022-05-24T19:20:14Z",
"published": "2022-05-24T19:20:14Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-23897"
},
{
"type": "WEB",
"url": "https://github.com/Aurorainfinity/vulnerabilities/blob/master/WildBit_Viewer/tga_file_format.md"
},
{
"type": "WEB",
"url": "https://www.wildbit-soft.fi/software.html"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-CR47-7QMC-79F4
Vulnerability from github – Published: 2023-01-26 21:30 – Updated: 2024-11-27 21:32
VLAI
Details
This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of TIF files. Crafted data in a TIF file can trigger a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-18686.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2022-42420"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-01-26T18:59:00Z",
"severity": "HIGH"
},
"details": "This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of TIF files. Crafted data in a TIF file can trigger a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-18686.",
"id": "GHSA-cr47-7qmc-79f4",
"modified": "2024-11-27T21:32:39Z",
"published": "2023-01-26T21:30:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-42420"
},
{
"type": "WEB",
"url": "https://www.tracker-software.com/product/pdf-xchange-editor/history"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-22-1388"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-CR48-5Q9G-M667
Vulnerability from github – Published: 2022-05-13 01:02 – Updated: 2022-05-13 01:02
VLAI
Details
In the ffgphd and ffgtkn functions in NASA CFITSIO 3.42, specially crafted images parsed via the library can cause a stack-based buffer overflow overwriting arbitrary data. An attacker can deliver an FIT image to trigger this vulnerability and potentially gain code execution.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2018-3846"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-04-16T16:29:00Z",
"severity": "HIGH"
},
"details": "In the ffgphd and ffgtkn functions in NASA CFITSIO 3.42, specially crafted images parsed via the library can cause a stack-based buffer overflow overwriting arbitrary data. An attacker can deliver an FIT image to trigger this vulnerability and potentially gain code execution.",
"id": "GHSA-cr48-5q9g-m667",
"modified": "2022-05-13T01:02:07Z",
"published": "2022-05-13T01:02:07Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-3846"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/K46I2MFPCEOGC5LLDXZSWPB3EBPON3KA"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202101-24"
},
{
"type": "WEB",
"url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0529"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-CR4G-4VCJ-5VXW
Vulnerability from github – Published: 2026-02-02 09:30 – Updated: 2026-02-03 00:30
VLAI
Details
In imgsys, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10363246; Issue ID: MSV-5779.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-20409"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-02T09:15:55Z",
"severity": "HIGH"
},
"details": "In imgsys, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10363246; Issue ID: MSV-5779.",
"id": "GHSA-cr4g-4vcj-5vxw",
"modified": "2026-02-03T00:30:18Z",
"published": "2026-02-02T09:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20409"
},
{
"type": "WEB",
"url": "https://corp.mediatek.com/product-security-bulletin/February-2026"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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 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.
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 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.
No CAPEC attack patterns related to this CWE.