Common Weakness Enumeration

CWE-786

Discouraged

Access of Memory Location Before Start of Buffer

Abstraction: Base · Status: Incomplete

API response cwe.mitre.org

The product reads or writes to a buffer using an index or pointer that references a memory location prior to the beginning of the buffer.

12 vulnerabilities reference this CWE, most recent first.

CVE-2026-20058 (GCVE-0-2026-20058)

Vulnerability from cvelistv5 – Published: 2026-03-04 17:47 – Updated: 2026-03-04 21:01
VLAI
Title
Cisco Secure Firewall Threat Defense Software Snort 3 Visual Basic for Application Denial of Service Vulnerability
Summary
Multiple Cisco products are affected by vulnerabilities in the Snort 3 VBA feature that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to crash. These vulnerabilities are due to improper error checking when decompressing VBA data. An attacker could exploit these vulnerabilities by sending crafted VBA data to the Snort 3 Detection Engine on the targeted device. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to unexpectedly restart, causing a DoS condition.
Severity
5.8 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-786 - Access of Memory Location Before Start of Buffer
Assigner
References
Impacted products
Vendor Product Version
Cisco Cisco Secure Firewall Threat Defense (FTD) Software Affected: 7.2.0
Affected: 7.2.0.1
Affected: 7.2.1
Affected: 7.3.0
Affected: 7.2.2
Affected: 7.2.3
Affected: 7.3.1
Affected: 7.2.4
Affected: 7.2.5
Affected: 7.2.4.1
Affected: 7.3.1.1
Affected: 7.4.0
Affected: 7.2.5.1
Affected: 7.4.1
Affected: 7.2.6
Affected: 7.4.1.1
Affected: 7.2.7
Affected: 7.2.5.2
Affected: 7.3.1.2
Affected: 7.2.8
Affected: 7.6.0
Affected: 7.4.2
Affected: 7.2.8.1
Affected: 7.4.2.1
Affected: 7.2.9
Affected: 7.7.0
Affected: 7.4.2.2
Affected: 7.2.10
Affected: 7.6.1
Affected: 7.4.2.3
Affected: 7.6.2
Affected: 7.7.10
Affected: 7.6.2.1
Affected: 7.7.10.1
Affected: 7.4.2.4
Affected: 7.2.10.2
Affected: 7.4.3
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Cisco Cisco UTD SNORT IPS Engine Software Affected: 17.9.3a
Affected: 17.12.1a
Affected: 17.12.2
Affected: 17.13.1a
Affected: 17.9.5a
Affected: 17.12.3
Affected: 17.14.1a
Affected: 17.12.4
Affected: 17.12.3a
Affected: 17.15.1a
Affected: 17.9.6
Affected: 17.16.1a
Affected: 17.12.4a
Affected: 17.15.2c
Affected: 17.12.4b
Affected: 17.15.2a
Affected: 17.12.5
Affected: 17.17.1
Affected: 17.12.5a
Affected: 17.15.3a
Affected: 17.15.3
Affected: 17.12.5b
Affected: 17.12.5c
Affected: 17.15.4
Affected: 17.18.1
Affected: 17.18.1a
Affected: 17.12.6
Affected: 17.15.4c
Affected: 17.12.5d
Affected: 17.18.2
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Show details on NVD website
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CVE-2023-46724 (GCVE-0-2023-46724)

Vulnerability from cvelistv5 – Published: 2023-11-01 19:09 – Updated: 2025-02-13 17:14
VLAI
Title
SQUID-2023:4 Denial of Service in SSL Certificate validation
Summary
Squid is a caching proxy for the Web. Due to an Improper Validation of Specified Index bug, Squid versions 3.3.0.1 through 5.9 and 6.0 prior to 6.4 compiled using `--with-openssl` are vulnerable to a Denial of Service attack against SSL Certificate validation. This problem allows a remote server to perform Denial of Service against Squid Proxy by initiating a TLS Handshake with a specially crafted SSL Certificate in a server certificate chain. This attack is limited to HTTPS and SSL-Bump. This bug is fixed in Squid version 6.4. In addition, patches addressing this problem for the stable releases can be found in Squid's patch archives. Those who you use a prepackaged version of Squid should refer to the package vendor for availability information on updated packages.
Severity
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-125 - Out-of-bounds Read
  • CWE-129 - Improper Validation of Array Index
  • CWE-786 - Access of Memory Location Before Start of Buffer
  • CWE-823 - Use of Out-of-range Pointer Offset
  • CWE-1285 - Improper Validation of Specified Index, Position, or Offset in Input
Assigner
References
Impacted products
Vendor Product Version
squid-cache squid Affected: >= 3.3.0.1, < 6.4
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2022-0522 (GCVE-0-2022-0522)

Vulnerability from cvelistv5 – Published: 2022-02-08 20:55 – Updated: 2024-08-02 23:32
VLAI
Title
Access of Memory Location Before Start of Buffer in radareorg/radare2
Summary
Access of Memory Location Before Start of Buffer in NPM radare2.js prior to 5.6.2.
Severity
6.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
CWE
  • CWE-786 - Access of Memory Location Before Start of Buffer
Assigner
References
Impacted products
Vendor Product Version
radareorg radareorg/radare2 Affected: unspecified , < 5.6.2 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2022-0351 (GCVE-0-2022-0351)

Vulnerability from cvelistv5 – Published: 2022-01-25 00:00 – Updated: 2025-11-03 20:34
VLAI
Title
Access of Memory Location Before Start of Buffer in vim/vim
Summary
Access of Memory Location Before Start of Buffer in GitHub repository vim/vim prior to 8.2.
Severity
8.4 (High)
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-786 - Access of Memory Location Before Start of Buffer
Assigner
References
Impacted products
Vendor Product Version
vim vim/vim Affected: unspecified , < 8.2 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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GHSA-39M6-6WM4-CM5W

Vulnerability from github – Published: 2024-06-10 21:30 – Updated: 2026-04-02 21:31
VLAI
Details

The issue was addressed with improved memory handling. This issue is fixed in macOS Ventura 13.6.7, macOS Monterey 12.7.5, iOS 16.7.8 and iPadOS 16.7.8, tvOS 17.5, visionOS 1.2, iOS 17.5 and iPadOS 17.5, watchOS 10.5. An attacker that has already achieved kernel code execution may be able to bypass kernel memory protections.

Severity
6.3 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
Show details on source website
To clipboard 

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  "modified": "2026-04-02T21:31:46Z",
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GHSA-9P2J-9MM4-8R6M

Vulnerability from github – Published: 2024-06-10 21:30 – Updated: 2026-04-02 21:31
VLAI
Details

An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in macOS Ventura 13.6.7, macOS Monterey 12.7.5, iOS 16.7.8 and iPadOS 16.7.8, tvOS 17.5, visionOS 1.2, iOS 17.5 and iPadOS 17.5, macOS Sonoma 14.5. Processing a file may lead to unexpected app termination or arbitrary code execution.

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Show details on source website
To clipboard 

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    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-10T21:15:50Z",
    "severity": "HIGH"
  },
  "details": "An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in macOS Ventura 13.6.7, macOS Monterey 12.7.5, iOS 16.7.8 and iPadOS 16.7.8, tvOS 17.5, visionOS 1.2, iOS 17.5 and iPadOS 17.5, macOS Sonoma 14.5. Processing a file may lead to unexpected app termination or arbitrary code execution.",
  "id": "GHSA-9p2j-9mm4-8r6m",
  "modified": "2026-04-02T21:31:46Z",
  "published": "2024-06-10T21:30:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-27831"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/120898"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/120899"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/120900"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/120901"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/120903"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/120905"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/120906"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/HT214100"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/HT214101"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/HT214102"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/HT214105"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/HT214106"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/HT214107"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/HT214108"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT214100"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT214101"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT214102"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT214105"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT214106"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT214107"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT214108"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/fulldisclosure/2024/Jun/5"
    }
  ],
  "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-JPJH-5CVH-HRP7

Vulnerability from github – Published: 2024-06-10 21:30 – Updated: 2026-04-02 21:31
VLAI
Details

The issue was addressed with improved memory handling. This issue is fixed in visionOS 1.2, watchOS 10.5, tvOS 17.5, iOS 17.5 and iPadOS 17.5. An app may be able to execute arbitrary code with kernel privileges.

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2024-27828"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-786"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-10T21:15:50Z",
    "severity": "HIGH"
  },
  "details": "The issue was addressed with improved memory handling. This issue is fixed in visionOS 1.2, watchOS 10.5, tvOS 17.5, iOS 17.5 and iPadOS 17.5. An app may be able to execute arbitrary code with kernel privileges.",
  "id": "GHSA-jpjh-5cvh-hrp7",
  "modified": "2026-04-02T21:31:45Z",
  "published": "2024-06-10T21:30:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-27828"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/120901"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/120902"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/120905"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/120906"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/HT214101"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/HT214102"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/HT214104"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/HT214108"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT214101"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT214102"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT214104"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT214108"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/fulldisclosure/2024/Jun/5"
    }
  ],
  "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-JXCJ-83RP-9HXV

Vulnerability from github – Published: 2022-02-09 00:00 – Updated: 2022-03-17 00:05
VLAI
Details

Access of Memory Location Before Start of Buffer in NPM radare2.js prior to 5.6.2.

Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2022-0522"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119",
      "CWE-786"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-02-08T21:15:00Z",
    "severity": "HIGH"
  },
  "details": "Access of Memory Location Before Start of Buffer in NPM radare2.js prior to 5.6.2.",
  "id": "GHSA-jxcj-83rp-9hxv",
  "modified": "2022-03-17T00:05:51Z",
  "published": "2022-02-09T00:00:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-0522"
    },
    {
      "type": "WEB",
      "url": "https://github.com/radareorg/radare2/commit/d17a7bdf166108a29a27cd89bf454f9fa6c050d6"
    },
    {
      "type": "WEB",
      "url": "https://huntr.dev/bounties/2d45e589-d614-4875-bba1-be0f729e7ca9"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BZTIMAS53YT66FUS4QHQAFRJOBMUFG6D"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/E6YBRQ3UCFWJVSOYIKPVUDASZ544TFND"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-PQ6V-HJQM-FRWW

Vulnerability from github – Published: 2024-06-11 15:31 – Updated: 2024-07-03 18:44
VLAI
Details

Memory safety bugs present in Firefox 126, Firefox ESR 115.11, and Thunderbird 115.11. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 127 and Firefox ESR < 115.12.

Severity
7.0 (High)
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2024-5700"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-786"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-11T13:15:51Z",
    "severity": "HIGH"
  },
  "details": "Memory safety bugs present in Firefox 126, Firefox ESR 115.11, and Thunderbird 115.11. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox \u003c 127 and Firefox ESR \u003c 115.12.",
  "id": "GHSA-pq6v-hjqm-frww",
  "modified": "2024-07-03T18:44:48Z",
  "published": "2024-06-11T15:31:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-5700"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=1862809%2C1889355%2C1893388%2C1895123"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00000.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00010.html"
    },
    {
      "type": "WEB",
      "url": "https://www.mozilla.org/security/advisories/mfsa2024-25"
    },
    {
      "type": "WEB",
      "url": "https://www.mozilla.org/security/advisories/mfsa2024-26"
    },
    {
      "type": "WEB",
      "url": "https://www.mozilla.org/security/advisories/mfsa2024-28"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-PWF2-5R2P-9C9W

Vulnerability from github – Published: 2024-06-10 21:30 – Updated: 2026-04-02 21:31
VLAI
Details

The issue was addressed with improved memory handling. This issue is fixed in tvOS 17.5, visionOS 1.2, Safari 17.5, iOS 17.5 and iPadOS 17.5, watchOS 10.5, macOS Sonoma 14.5. Processing web content may lead to arbitrary code execution.

Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2024-27808"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-786"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-10T21:15:50Z",
    "severity": "HIGH"
  },
  "details": "The issue was addressed with improved memory handling. This issue is fixed in tvOS 17.5, visionOS 1.2, Safari 17.5, iOS 17.5 and iPadOS 17.5, watchOS 10.5, macOS Sonoma 14.5. Processing web content may lead to arbitrary code execution.",
  "id": "GHSA-pwf2-5r2p-9c9w",
  "modified": "2026-04-02T21:31:46Z",
  "published": "2024-06-10T21:30:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-27808"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/120896"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/120901"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/120902"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/120903"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/120905"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/120906"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/HT214101"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/HT214102"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/HT214103"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/HT214104"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/HT214106"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/HT214108"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT214101"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT214104"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT214106"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT214108"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/fulldisclosure/2024/Jun/5"
    }
  ],
  "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"
    }
  ]
}

No mitigation information available for this CWE.

No CAPEC attack patterns related to this CWE.

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