Vulnerability-Lookup

CVE-2026-14461 (GCVE-0-2026-14461)

Vulnerability from cvelistv5 – Published: 2026-07-10 10:38 – Updated: 2026-07-10 13:14 X_Open Source

Title

Out-of-bound read in mtr

Summary

mtr is vulnerable to Out-of-bound read vulnerability in ipinfo_lookup() function. An attacker who can influence the TXT response used for AS lookups can trigger this bug by returning a DNS response that is larger than 512 bytes and uses a crafted compression pointer in the answer NAME field. ipinfo_lookup() function uses the length of the response as the end-of-message boundary for dn_expand() function. The result is a reliable crash. This issue exists in the mtr through version 0.96 and it was fixed in commit 48e1794414d338ce47abc0f27c25ade8788af9c3.

Severity

5.1 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-125 - Out-of-bounds read

Assigner

CERT-PL

References

2 references

URL	Tags
https://cert.pl/en/posts/2026/07/CVE-2026-14461	third-party-advisory
https://github.com/traviscross/mtr/commit/48e1794…	patch

Impacted products

1 product

Vendor	Product	Version
BitWizard	mtr	Affected: 0 , ≤ 0.96 (custom)

Credits

Michał Majchrowicz (AFINE Team) Marcin Wyczechowski (AFINE Team)

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-14461

Vulnerability from fkie_nvd - Published: 2026-07-10 11:16 - Updated: 2026-07-10 19:22

Severity

5.1 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Summary

References

	URL	Tags
	cvd@cert.pl	https://cert.pl/en/posts/2026/07/CVE-2026-14461
	cvd@cert.pl	https://github.com/traviscross/mtr/commit/48e1794414d338ce47abc0f27c25ade8788af9c3

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "mtr",
          "programFiles": [
            "ui/asn.c"
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          ],
          "repo": "https://github.com/traviscross/mtr/",
          "vendor": "BitWizard",
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            {
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    }
  ],
  "id": "CVE-2026-14461",
  "lastModified": "2026-07-10T19:22:17.323",
  "metrics": {
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          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
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          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
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}

GHSA-58VQ-325M-3WRJ

Vulnerability from github – Published: 2026-07-10 12:31 – Updated: 2026-07-10 12:31

Details

This issue exists in the mtr through version 0.96 and it was fixed in commit 48e1794414d338ce47abc0f27c25ade8788af9c3.

Severity

5.1 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

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  "aliases": [
    "CVE-2026-14461"
  ],
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      "CWE-125"
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-10T11:16:32Z",
    "severity": "MODERATE"
  },
  "details": "mtr is vulnerable to Out-of-bound read vulnerability in ipinfo_lookup() function. An attacker who can influence the TXT response used for AS lookups can trigger this bug by returning a DNS response that is larger than 512 bytes and uses a crafted compression pointer in the answer NAME field.\u00a0ipinfo_lookup() function uses the length of the response as the\u00a0end-of-message boundary for dn_expand() function.\u00a0The result is a reliable crash.\n\n\nThis issue exists in the mtr through version 0.96 and it was fixed in commit\u00a048e1794414d338ce47abc0f27c25ade8788af9c3.",
  "id": "GHSA-58vq-325m-3wrj",
  "modified": "2026-07-10T12:31:44Z",
  "published": "2026-07-10T12:31:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-14461"
    },
    {
      "type": "WEB",
      "url": "https://github.com/traviscross/mtr/commit/48e1794414d338ce47abc0f27c25ade8788af9c3"
    },
    {
      "type": "WEB",
      "url": "https://cert.pl/en/posts/2026/07/CVE-2026-14461"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

MSRC_CVE-2026-14461

Vulnerability from csaf_microsoft - Published: 2026-07-02 00:00 - Updated: 2026-07-11 01:04

Summary

Out-of-bound read in mtr

Notes

Additional Resources: To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

Disclaimer: The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

CVE-2026-14461

CWE-125 - Out-of-bounds Read

Affected products

Known affected 1 product

Product	Identifier	Version	Remediation
Unresolved product id: 17084-1		—	None Available

References

4 references

URL	Category
https://msrc.microsoft.com/csaf/vex/2026/msrc_cve…	self
https://support.microsoft.com/lifecycle	external
https://www.first.org/cvss	external
https://msrc.microsoft.com/csaf/vex/2026/msrc_cve…	self

JSON

To clipboard

{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2026-14461 Out-of-bound read in mtr - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-14461.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "Out-of-bound read in mtr",
    "tracking": {
      "current_release_date": "2026-07-11T01:04:28.000Z",
      "generator": {
        "date": "2026-07-11T07:31:31.450Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2026-14461",
      "initial_release_date": "2026-07-02T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2026-07-11T01:04:28.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "3.0",
                "product": {
                  "name": "Azure Linux 3.0",
                  "product_id": "17084"
                }
              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "azl3 mtr 0:0.95-3.azl3",
                "product": {
                  "name": "azl3 mtr 0:0.95-3.azl3",
                  "product_id": "1"
                }
              }
            ],
            "category": "product_name",
            "name": "mtr"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 mtr 0:0.95-3.azl3 as a component of Azure Linux 3.0",
          "product_id": "17084-1"
        },
        "product_reference": "1",
        "relates_to_product_reference": "17084"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-14461",
      "cwe": {
        "id": "CWE-125",
        "name": "Out-of-bounds Read"
      },
      "notes": [
        {
          "category": "general",
          "text": "CERT-PL",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "known_affected": [
          "17084-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-14461 Out-of-bound read in mtr - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-14461.json"
        }
      ],
      "remediations": [
        {
          "category": "none_available",
          "date": "2026-07-11T01:04:28.000Z",
          "details": "There is no fix available for this vulnerability as of now",
          "product_ids": [
            "17084-1"
          ]
        }
      ],
      "title": "Out-of-bound read in mtr"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-14461 (GCVE-0-2026-14461)

FKIE_CVE-2026-14461

GHSA-58VQ-325M-3WRJ

MSRC_CVE-2026-14461

Tags

Sightings

Nomenclature