Common Weakness Enumeration

CWE-193

Allowed

Off-by-one Error

Abstraction: Base · Status: Draft

API response cwe.mitre.org

A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value.

311 vulnerabilities reference this CWE, most recent first.

CVE-2026-111273 (GCVE-0-2026-111273)

Vulnerability from cvelistv5 – Published: 2026-10-15 21:43 – Updated: 2026-10-16 19:39
VLAI
Title
unarr through 1.1.1 Off-by-One Heap Buffer Overflow via tar_get_name
Summary
unarr through 1.1.1 contains an off-by-one heap-based buffer overflow in tar_get_name() in tar/parse-tar.c, reachable through the ar_entry_get_name() API. Attackers can supply a crafted TAR archive with a full ustar prefix and name to write a NUL byte past the allocation, corrupting heap memory and crashing the process.
Severity
6.9 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
6.1 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 19:38 UTC
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6432 records in the last 180 days details
References
Impacted products
Vendor Product Version
selmf unarr Affected: 0 , ≤ 1.1.1 (semver)
Create a notification for this product.
Date Public
2026-10-15 00:00
Credits
HaiND from the Post and Telecommunication Institute of Technology
Show details on NVD website
To clipboard 

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CVE-2026-110604 (GCVE-0-2026-110604)

Vulnerability from cvelistv5 – Published: 2026-10-14 14:16 – Updated: 2026-10-14 16:19
VLAI
Title
Mini-XML 4.0.0 through 4.0.6 Stack Out-of-Bounds Write via mxml_strtod()
Summary
Mini-XML 4.0.0 through 4.0.6 contains an off-by-one stack out-of-bounds write in mxml_strtod() when the locale decimal point is not '.'. Attackers can supply XML with a 63-digit REAL value followed by '.' to write a NUL byte past the 64-byte stack buffer, corrupting stack memory or crashing the process.
Severity
2 (Low)
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
3.6 (Low)
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 16:19 UTC
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6432 records in the last 180 days details
References
Impacted products
Vendor Product Version
Michael R Sweet Mini-XML Affected: 4.0.0 , ≤ 4.0.6 (semver)
    cpe:2.3:a:mini-xml_project:mini-xml:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-08 00:00
Credits
HaiND from the Post and Telecommunication Institute of Technology
Show details on NVD website
To clipboard 

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CVE-2026-108443 (GCVE-0-2026-108443)

Vulnerability from cvelistv5 – Published: 2026-10-15 20:57 – Updated: 2026-10-17 03:55
VLAI
Title
Microsoft Office Word Remote Code Execution Vulnerability
Summary
Off-by-one error in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 00:00 UTC
CWE
Assigner
microsoft CNA under the mitre root
CNA scorecard B 82/100 over 3956 records in the last 180 days details
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
Microsoft Microsoft Office 365 for Mac Affected: 1.0.0 , < 16.114.26101123 (custom)
Create a notification for this product.
Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < 16.0.14334.20974 (custom)
Create a notification for this product.
Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < 16.0.17932.21056 (custom)
Create a notification for this product.
Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.114.26101123 (custom)
Create a notification for this product.
Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.114.26101123 (custom)
Create a notification for this product.
Date Public
2026-10-15 14:00
Show details on NVD website
To clipboard 

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CVE-2026-106584 (GCVE-0-2026-106584)

Vulnerability from cvelistv5 – Published: 2026-10-06 20:47 – Updated: 2026-10-07 16:08
VLAI
Summary
In ssh-keygen in OpenSSH before 10.6, certificates could have incorrect expiration times because of Daylight Saving mishandling. There can be a slightly more severe effect on users in certain Antarctic locations.
Severity
2.5 (Low)
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-07 16:05 UTC
CWE
Assigner
mitre CNA under the mitre root
CNA scorecard E 28/100 over 2341 records in the last 180 days details
References
Impacted products
Vendor Product Version
OpenBSD OpenSSH Affected: 0 , < 10.6 (custom)
    cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-104774 (GCVE-0-2026-104774)

Vulnerability from cvelistv5 – Published: 2026-10-12 19:58 – Updated: 2026-10-13 15:56
VLAI
Title
OWASP Coraza WAF: jsDecode Off-by-One in Octal Escape Handling Enables WAF Bypass
Summary
OWASP Coraza WAF is a golang modsecurity compatible web application firewall library. From 3.0.0 until 3.8.0, the t:jsDecode transformation in internal/transformations/js_decode.go:64-70 includes the backslash in the octal buffer, causing ParseInt to fail and return a null byte. The flaw is triggered when a rule relies on t:jsDecode and the request contains JavaScript octal escape sequences. An unauthenticated attacker can encode attack syntax with JavaScript octal escapes so the backend decodes the intended bytes while Coraza rules using t:jsDecode inspect corrupted null-byte output. The mismatch can bypass WAF rules and expose the protected application to attacks such as cross-site scripting or SQL injection. This issue is fixed in version 3.8.0.
Severity
5.8 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 15:56 UTC
CWE
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7626 records in the last 180 days details
References
Impacted products
Vendor Product Version
corazawaf coraza Affected: >= 3.0.0, < 3.8.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-104033 (GCVE-0-2026-104033)

Vulnerability from cvelistv5 – Published: 2026-10-06 00:12 – Updated: 2026-10-16 10:57
VLAI
Title
Sssd: sssd: access control bypass via improper ldap shadow expiration check
Summary
A flaw was found in SSSD. When configured to enforce account expiration using LDAP (Lightweight Directory Access Protocol) shadow attributes, SSSD fails to treat an expiration value of zero as an expired account. A user with valid credentials for an expired account can exploit this flaw to bypass access controls and authenticate to the system. This allows unauthorized access to persist after the account was intended to be deactivated.
Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-07 20:10 UTC
CWE
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1036 records in the last 180 days details
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-104033 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2479271 issue-trackingx_refsource_REDHAT
Impacted products
Date Public
2026-10-05 23:29
Credits
This issue was discovered by Found by AISLE in partnership with Red Hat.
Show details on NVD website
To clipboard 

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CVE-2026-102857 (GCVE-0-2026-102857)

Vulnerability from cvelistv5 – Published: 2026-10-13 18:59 – Updated: 2026-10-16 23:14
VLAI
Title
Microsoft Office Visio Remote Code Execution Vulnerability
Summary
Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 21:14 UTC
CWE
Assigner
microsoft CNA under the mitre root
CNA scorecard B 82/100 over 3956 records in the last 180 days details
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < 16.0.14334.20974 (custom)
Create a notification for this product.
Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < 16.0.17932.21056 (custom)
Create a notification for this product.
Date Public
2026-10-13 14:00
Show details on NVD website
To clipboard 

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CVE-2026-101302 (GCVE-0-2026-101302)

Vulnerability from cvelistv5 – Published: 2026-10-15 06:53 – Updated: 2026-10-15 13:55
VLAI
Title
Remote DoS via receive-side kernel TLS
Summary
TLS 1.3 embeds the actual record type as the last non-zero byte of the decrypted payload, optionally followed by zero padding. The code which searches for the inner record type had an off-by-one bug which could be triggered by an invalid frame, leading to an underflow followed by an unconditional NULL pointer dereference, causing a kernel panic. A remote TLS 1.3 peer can send a specially crafted record to trigger a kernel panic, resulting in a Denial of Service (DoS).
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 13:54 UTC
CWE
Assigner
freebsd CNA under the mitre root
CNA scorecard D 60/100 over 69 records in the last 180 days details
References
Impacted products
Vendor Product Version
FreeBSD FreeBSD Affected: 15.1-RELEASE , < p4 (release)
Affected: 15.0-RELEASE , < p14 (release)
Affected: 14.5-RELEASE , < p1 (release)
Affected: 14.4-RELEASE , < p10 (release)
Create a notification for this product.
Date Public
2026-09-29 20:30
Credits
Mark Johnston
Show details on NVD website
To clipboard 

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CVE-2026-101014 (GCVE-0-2026-101014)

Vulnerability from cvelistv5 – Published: 2026-09-28 08:15 – Updated: 2026-09-28 12:43 X_Open Source
VLAI
Title
Trusted Domain Project OpenDMARC DMARC Record opendmarc_util.c opendmarc_util_cleanup off-by-one
Summary
A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this vulnerability is the function opendmarc_util_cleanup in the library libopendmarc/opendmarc_util.c of the component DMARC Record Parser. Performing a manipulation results in off-by-one. The attack may be initiated remotely. The exploit is now public and may be used. The patch is named b3b1da9264bc80324094a27c71e7369bdedc62ae. To fix this issue, it is recommended to deploy a patch.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
7.3 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-28 12:43 UTC
CWE
Assigner
VulDB CNA under the mitre root
CNA scorecard B 82/100 over 3827 records in the last 180 days details
References
Impacted products
Vendor Product Version
Trusted Domain Project OpenDMARC Affected: 1.4.0
Affected: 1.4.1
Affected: 1.4.2
    cpe:2.3:a:trusted_domain_project:opendmarc:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
WeitongLi (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-100889 (GCVE-0-2026-100889)

Vulnerability from cvelistv5 – Published: 2026-09-27 23:45 – Updated: 2026-09-28 13:11
VLAI
Title
Trusted Domain Project OpenDKIM Decoder util.c dkim_qp_decode off-by-one
Summary
A vulnerability was detected in Trusted Domain Project OpenDKIM up to 2.11.0. Affected is the function dkim_qp_decode of the file util.c of the component Decoder. The manipulation results in off-by-one. The attack may be performed from remote. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C
7.3 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-28 13:06 UTC
CWE
Assigner
VulDB CNA under the mitre root
CNA scorecard B 82/100 over 3827 records in the last 180 days details
References
URL Tags
https://vuldb.com/vuln/410839 vdb-entrytechnical-description
https://vuldb.com/vuln/410839/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-100889 third-party-advisory
https://vuldb.com/submit/917063 third-party-advisory
https://weitongli.com/share/opendkim-qp-off-by-one.html exploit
Impacted products
Vendor Product Version
Trusted Domain Project OpenDKIM Affected: 2.0
Affected: 2.1
Affected: 2.2
Affected: 2.3
Affected: 2.4
Affected: 2.5
Affected: 2.6
Affected: 2.7
Affected: 2.8
Affected: 2.9
Affected: 2.10
Affected: 2.11.0
    cpe:2.3:a:trusted_domain_project:opendkim:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
WeitongLi (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

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            {
              "status": "affected",
              "version": "2.10"
            },
            {
              "status": "affected",
              "version": "2.11.0"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "WeitongLi (VulDB User)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "VulDB CNA Team"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability was detected in Trusted Domain Project OpenDKIM up to 2.11.0. Affected is the function dkim_qp_decode of the file util.c of the component Decoder. The manipulation results in off-by-one. The attack may be performed from remote. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 7.3,
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            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C",
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        },
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          "cvssV2_0": {
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            "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:C",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-193",
              "description": "Off-by-One",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-189",
              "description": "Numeric Error",
              "lang": "en",
              "type": "CWE"
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          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-27T23:45:16.286Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-410839 | Trusted Domain Project OpenDKIM Decoder util.c dkim_qp_decode off-by-one",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/410839"
        },
        {
          "name": "VDB-410839 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/410839/cti"
        },
        {
          "name": "CVE-2026-100889 | CVE Analysis and Report",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/cve/CVE-2026-100889"
        },
        {
          "name": "Submit #917063 | The Trusted Domain Project OpenDKIM 2.11.0 Out-of-Bounds Read",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/917063"
        },
        {
          "tags": [
            "exploit"
          ],
          "url": "https://weitongli.com/share/opendkim-qp-off-by-one.html"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-09-27T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-09-27T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-09-27T09:41:07.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "Trusted Domain Project OpenDKIM Decoder util.c dkim_qp_decode off-by-one",
      "x_generator": [
        "VulDB PVTS v202609"
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-100889",
    "datePublished": "2026-09-27T23:45:16.286Z",
    "dateReserved": "2026-09-27T07:35:55.983Z",
    "dateUpdated": "2026-09-28T13:11:18.272Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}
Mitigation
Implementation

When copying character arrays or using character manipulation methods, the correct size parameter must be used to account for the null terminator that needs to be added at the end of the array. Some examples of functions susceptible to this weakness in C include strcpy(), strncpy(), strcat(), strncat(), printf(), sprintf(), scanf() and sscanf().

No CAPEC attack patterns related to this CWE.

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