Vulnerability-Lookup

Search criteria

Vendor

Product

Assigner (CNA or root)

Sources

Sort by

Order

CVSS min

CVSS max

Apply ordering (override relevance)

CVE-2026-102552 (GCVE-0-2026-102552)

Vulnerability from nvd – Published: 2026-10-16 17:28 – Updated: 2026-10-16 17:32

Title

Improper verification of the source of a communication channel in FreeRTOS-Plus-TCP DNS resolver

Summary

Improper verification of the source of a communication channel in the DNS resolver in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow remote third-party to insert a chosen address into the device's DNS cache via a forged DNS reply. To remediate this issue, users should upgrade to version V4.4.2 and enable ipconfigDNS_CHECK_REPLY_SOURCE_IP.

Severity

5.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

8.2 (High)


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

CWE

CWE-940 - Improper verification of source of a communication channel

Assigner

AMZN CNA under the mitre root

CNA scorecard A 94/100 over 139 records in the last 180 days details

References

3 references

URL	Tags
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/rel…	release-notespatch
https://aws.amazon.com/security/security-bulletin…	vendor-advisory
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/sec…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
FreeRTOS	FreeRTOS-Plus-TCP	Affected: 0 , ≤ 4.4.1 (custom) cpe:2.3:a:freertos:freertos-plus-tcp::::::::

Credits

Causal Security

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "FreeRTOS-Plus-TCP",
          "vendor": "FreeRTOS",
          "versions": [
            {
              "lessThanOrEqual": "4.4.1",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:freertos:freertos-plus-tcp:*:*:*:*:*:*:*:*",
                  "versionEndIncluding": "4.4.1",
                  "versionStartIncluding": "0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "OR"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Causal Security"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eImproper verification of the source of a communication channel in the DNS resolver in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow remote third-party to insert a chosen address into the device\u0027s DNS cache via a forged DNS reply.\u003c/p\u003e\u003cp\u003eTo remediate this issue, users should upgrade to version V4.4.2 and enable \u003ccode\u003eipconfigDNS_CHECK_REPLY_SOURCE_IP\u003c/code\u003e.\u003c/p\u003e"
            }
          ],
          "value": "Improper verification of the source of a communication channel in the DNS resolver in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow remote third-party to insert a chosen address into the device\u0027s DNS cache via a forged DNS reply.\n\n\n\nTo remediate this issue, users should upgrade to version V4.4.2 and enable ipconfigDNS_CHECK_REPLY_SOURCE_IP."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-142",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-142 DNS Cache Poisoning"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        },
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "HIGH",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-940",
              "description": "CWE-940 Improper verification of source of a communication channel",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-16T17:32:15.640Z",
        "orgId": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
        "shortName": "AMZN"
      },
      "references": [
        {
          "tags": [
            "release-notes",
            "patch"
          ],
          "url": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.4.2"
        },
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://aws.amazon.com/security/security-bulletins/2026-139-aws/"
        },
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-h4fw-pv82-p7h5"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Improper verification of the source of a communication channel in FreeRTOS-Plus-TCP DNS resolver",
      "x_generator": {
        "engine": "Vulnogram 0.5.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
    "assignerShortName": "AMZN",
    "cveId": "CVE-2026-102552",
    "datePublished": "2026-10-16T17:28:47.578Z",
    "dateReserved": "2026-09-29T13:04:14.207Z",
    "dateUpdated": "2026-10-16T17:32:15.640Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-102551 (GCVE-0-2026-102551)

Vulnerability from nvd – Published: 2026-10-16 17:27 – Updated: 2026-10-16 17:30

Title

Improper verification of the source of a communication channel in FreeRTOS-Plus-TCP Router Advertisement handling

Summary

Improper verification of the source of a communication channel in the IPv6 Router Advertisement handler in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow a remote third-party to influence an endpoint's IPv6 default gateway, on-link prefix, and address configuration via a crafted Router Advertisement. To remediate this issue, users should upgrade to version V4.4.2.

Severity

7.7 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

9.2 (Critical)


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

CWE

CWE-940 - Improper verification of source of a communication channel

Assigner

AMZN CNA under the mitre root

CNA scorecard A 94/100 over 139 records in the last 180 days details

References

3 references

URL	Tags
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/rel…	release-notespatch
https://aws.amazon.com/security/security-bulletin…	vendor-advisory
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/sec…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
FreeRTOS	FreeRTOS-Plus-TCP	Affected: 0 , ≤ 4.4.1 (custom) cpe:2.3:a:freertos:freertos-plus-tcp::::::::

Credits

Causal Security

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "FreeRTOS-Plus-TCP",
          "vendor": "FreeRTOS",
          "versions": [
            {
              "lessThanOrEqual": "4.4.1",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:freertos:freertos-plus-tcp:*:*:*:*:*:*:*:*",
                  "versionEndIncluding": "4.4.1",
                  "versionStartIncluding": "0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "OR"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Causal Security"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eImproper verification of the source of a communication channel in the IPv6 Router Advertisement handler in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow a remote third-party to influence an endpoint\u0027s IPv6 default gateway, on-link prefix, and address configuration via a crafted Router Advertisement.\u003c/p\u003e\u003cp\u003eTo remediate this issue, users should upgrade to version V4.4.2.\u003c/p\u003e"
            }
          ],
          "value": "Improper verification of the source of a communication channel in the IPv6 Router Advertisement handler in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow a remote third-party to influence an endpoint\u0027s IPv6 default gateway, on-link prefix, and address configuration via a crafted Router Advertisement.\n\n\n\nTo remediate this issue, users should upgrade to version V4.4.2."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-194",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-194 Fake the Source of Data"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        },
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 9.2,
            "baseSeverity": "CRITICAL",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-940",
              "description": "CWE-940 Improper verification of source of a communication channel",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-16T17:30:47.034Z",
        "orgId": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
        "shortName": "AMZN"
      },
      "references": [
        {
          "tags": [
            "release-notes",
            "patch"
          ],
          "url": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.4.2"
        },
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://aws.amazon.com/security/security-bulletins/2026-139-aws/"
        },
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-pjq5-fqrr-g6pv"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Improper verification of the source of a communication channel in FreeRTOS-Plus-TCP Router Advertisement handling",
      "x_generator": {
        "engine": "Vulnogram 0.5.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
    "assignerShortName": "AMZN",
    "cveId": "CVE-2026-102551",
    "datePublished": "2026-10-16T17:27:38.483Z",
    "dateReserved": "2026-09-29T13:04:13.721Z",
    "dateUpdated": "2026-10-16T17:30:47.034Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2024-38373 (GCVE-0-2024-38373)

Vulnerability from nvd – Published: 2024-06-24 16:23 – Updated: 2024-08-02 04:04

Title

FreeRTOS-Plus-TCP Buffer Over-Read in DNS Response Parser

Summary

FreeRTOS-Plus-TCP is a lightweight TCP/IP stack for FreeRTOS. FreeRTOS-Plus-TCP versions 4.0.0 through 4.1.0 contain a buffer over-read issue in the DNS Response Parser when parsing domain names in a DNS response. A carefully crafted DNS response with domain name length value greater than the actual domain name length, could cause the parser to read beyond the DNS response buffer. This issue affects applications using DNS functionality of the FreeRTOS-Plus-TCP stack. Applications that do not use DNS functionality are not affected, even when the DNS functionality is enabled. This vulnerability has been patched in version 4.1.1.

Severity

9.6 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-07-05 14:20 UTC

CWE

CWE-126 - Buffer Over-read

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7730 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/sec…	x_refsource_CONFIRM
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/rel…	x_refsource_MISC

Impacted products

2 products

Vendor	Product	Version
FreeRTOS	FreeRTOS-Plus-TCP	Affected: >= 4.0.0, <= 4.1.0
amazon	freertos-plus-tcp	Affected: 4.0.0 , < 4.1.1 (custom) cpe:2.3:a:amazon:freertos-plus-tcp:4.0.0:::::::*

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:amazon:freertos-plus-tcp:4.0.0:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "freertos-plus-tcp",
            "vendor": "amazon",
            "versions": [
              {
                "lessThan": "4.1.1",
                "status": "affected",
                "version": "4.0.0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-38373",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-07-05T14:20:06.049891Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-07-05T20:19:11.301Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T04:04:25.337Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-ppcp-rg65-58mv",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-ppcp-rg65-58mv"
          },
          {
            "name": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.1.1",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.1.1"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "FreeRTOS-Plus-TCP",
          "vendor": "FreeRTOS",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 4.0.0, \u003c= 4.1.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "FreeRTOS-Plus-TCP is a lightweight TCP/IP stack for FreeRTOS. FreeRTOS-Plus-TCP versions 4.0.0 through 4.1.0 contain a buffer over-read issue in the DNS Response Parser when parsing domain names in a DNS response. A carefully crafted DNS response with domain name length value greater than the actual domain name length, could cause the parser to read beyond the DNS response buffer. This issue affects applications using DNS functionality of the FreeRTOS-Plus-TCP stack. Applications that do not use DNS functionality are not affected, even when the DNS functionality is enabled. This vulnerability has been patched in version 4.1.1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.6,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-126",
              "description": "CWE-126: Buffer Over-read",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-06-24T16:23:00.162Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-ppcp-rg65-58mv",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-ppcp-rg65-58mv"
        },
        {
          "name": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.1.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.1.1"
        }
      ],
      "source": {
        "advisory": "GHSA-ppcp-rg65-58mv",
        "discovery": "UNKNOWN"
      },
      "title": "FreeRTOS-Plus-TCP Buffer Over-Read in DNS Response Parser"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2024-38373",
    "datePublished": "2024-06-24T16:23:00.162Z",
    "dateReserved": "2024-06-14T14:16:16.466Z",
    "dateUpdated": "2024-08-02T04:04:25.337Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

CVE-2026-102552 (GCVE-0-2026-102552)

Vulnerability from cvelistv5 – Published: 2026-10-16 17:28 – Updated: 2026-10-16 17:32

Title

Improper verification of the source of a communication channel in FreeRTOS-Plus-TCP DNS resolver

Summary

Improper verification of the source of a communication channel in the DNS resolver in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow remote third-party to insert a chosen address into the device's DNS cache via a forged DNS reply. To remediate this issue, users should upgrade to version V4.4.2 and enable ipconfigDNS_CHECK_REPLY_SOURCE_IP.

Severity

5.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

8.2 (High)


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

CWE

CWE-940 - Improper verification of source of a communication channel

Assigner

AMZN CNA under the mitre root

CNA scorecard A 94/100 over 139 records in the last 180 days details

References

3 references

URL	Tags
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/rel…	release-notespatch
https://aws.amazon.com/security/security-bulletin…	vendor-advisory
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/sec…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
FreeRTOS	FreeRTOS-Plus-TCP	Affected: 0 , ≤ 4.4.1 (custom) cpe:2.3:a:freertos:freertos-plus-tcp::::::::

Credits

Causal Security

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "FreeRTOS-Plus-TCP",
          "vendor": "FreeRTOS",
          "versions": [
            {
              "lessThanOrEqual": "4.4.1",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:freertos:freertos-plus-tcp:*:*:*:*:*:*:*:*",
                  "versionEndIncluding": "4.4.1",
                  "versionStartIncluding": "0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "OR"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Causal Security"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eImproper verification of the source of a communication channel in the DNS resolver in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow remote third-party to insert a chosen address into the device\u0027s DNS cache via a forged DNS reply.\u003c/p\u003e\u003cp\u003eTo remediate this issue, users should upgrade to version V4.4.2 and enable \u003ccode\u003eipconfigDNS_CHECK_REPLY_SOURCE_IP\u003c/code\u003e.\u003c/p\u003e"
            }
          ],
          "value": "Improper verification of the source of a communication channel in the DNS resolver in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow remote third-party to insert a chosen address into the device\u0027s DNS cache via a forged DNS reply.\n\n\n\nTo remediate this issue, users should upgrade to version V4.4.2 and enable ipconfigDNS_CHECK_REPLY_SOURCE_IP."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-142",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-142 DNS Cache Poisoning"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        },
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "HIGH",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-940",
              "description": "CWE-940 Improper verification of source of a communication channel",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-16T17:32:15.640Z",
        "orgId": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
        "shortName": "AMZN"
      },
      "references": [
        {
          "tags": [
            "release-notes",
            "patch"
          ],
          "url": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.4.2"
        },
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://aws.amazon.com/security/security-bulletins/2026-139-aws/"
        },
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-h4fw-pv82-p7h5"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Improper verification of the source of a communication channel in FreeRTOS-Plus-TCP DNS resolver",
      "x_generator": {
        "engine": "Vulnogram 0.5.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
    "assignerShortName": "AMZN",
    "cveId": "CVE-2026-102552",
    "datePublished": "2026-10-16T17:28:47.578Z",
    "dateReserved": "2026-09-29T13:04:14.207Z",
    "dateUpdated": "2026-10-16T17:32:15.640Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-102551 (GCVE-0-2026-102551)

Vulnerability from cvelistv5 – Published: 2026-10-16 17:27 – Updated: 2026-10-16 17:30

Title

Improper verification of the source of a communication channel in FreeRTOS-Plus-TCP Router Advertisement handling

Summary

Improper verification of the source of a communication channel in the IPv6 Router Advertisement handler in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow a remote third-party to influence an endpoint's IPv6 default gateway, on-link prefix, and address configuration via a crafted Router Advertisement. To remediate this issue, users should upgrade to version V4.4.2.

Severity

7.7 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

9.2 (Critical)


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

CWE

CWE-940 - Improper verification of source of a communication channel

Assigner

AMZN CNA under the mitre root

CNA scorecard A 94/100 over 139 records in the last 180 days details

References

3 references

URL	Tags
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/rel…	release-notespatch
https://aws.amazon.com/security/security-bulletin…	vendor-advisory
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/sec…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
FreeRTOS	FreeRTOS-Plus-TCP	Affected: 0 , ≤ 4.4.1 (custom) cpe:2.3:a:freertos:freertos-plus-tcp::::::::

Credits

Causal Security

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "FreeRTOS-Plus-TCP",
          "vendor": "FreeRTOS",
          "versions": [
            {
              "lessThanOrEqual": "4.4.1",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:freertos:freertos-plus-tcp:*:*:*:*:*:*:*:*",
                  "versionEndIncluding": "4.4.1",
                  "versionStartIncluding": "0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "OR"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Causal Security"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eImproper verification of the source of a communication channel in the IPv6 Router Advertisement handler in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow a remote third-party to influence an endpoint\u0027s IPv6 default gateway, on-link prefix, and address configuration via a crafted Router Advertisement.\u003c/p\u003e\u003cp\u003eTo remediate this issue, users should upgrade to version V4.4.2.\u003c/p\u003e"
            }
          ],
          "value": "Improper verification of the source of a communication channel in the IPv6 Router Advertisement handler in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow a remote third-party to influence an endpoint\u0027s IPv6 default gateway, on-link prefix, and address configuration via a crafted Router Advertisement.\n\n\n\nTo remediate this issue, users should upgrade to version V4.4.2."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-194",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-194 Fake the Source of Data"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        },
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 9.2,
            "baseSeverity": "CRITICAL",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-940",
              "description": "CWE-940 Improper verification of source of a communication channel",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-16T17:30:47.034Z",
        "orgId": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
        "shortName": "AMZN"
      },
      "references": [
        {
          "tags": [
            "release-notes",
            "patch"
          ],
          "url": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.4.2"
        },
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://aws.amazon.com/security/security-bulletins/2026-139-aws/"
        },
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-pjq5-fqrr-g6pv"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Improper verification of the source of a communication channel in FreeRTOS-Plus-TCP Router Advertisement handling",
      "x_generator": {
        "engine": "Vulnogram 0.5.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
    "assignerShortName": "AMZN",
    "cveId": "CVE-2026-102551",
    "datePublished": "2026-10-16T17:27:38.483Z",
    "dateReserved": "2026-09-29T13:04:13.721Z",
    "dateUpdated": "2026-10-16T17:30:47.034Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2024-38373 (GCVE-0-2024-38373)

Vulnerability from cvelistv5 – Published: 2024-06-24 16:23 – Updated: 2024-08-02 04:04

Title

FreeRTOS-Plus-TCP Buffer Over-Read in DNS Response Parser

Summary

FreeRTOS-Plus-TCP is a lightweight TCP/IP stack for FreeRTOS. FreeRTOS-Plus-TCP versions 4.0.0 through 4.1.0 contain a buffer over-read issue in the DNS Response Parser when parsing domain names in a DNS response. A carefully crafted DNS response with domain name length value greater than the actual domain name length, could cause the parser to read beyond the DNS response buffer. This issue affects applications using DNS functionality of the FreeRTOS-Plus-TCP stack. Applications that do not use DNS functionality are not affected, even when the DNS functionality is enabled. This vulnerability has been patched in version 4.1.1.

Severity

9.6 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-07-05 14:20 UTC

CWE

CWE-126 - Buffer Over-read

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7730 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/sec…	x_refsource_CONFIRM
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/rel…	x_refsource_MISC

Impacted products

2 products

Vendor	Product	Version
FreeRTOS	FreeRTOS-Plus-TCP	Affected: >= 4.0.0, <= 4.1.0
amazon	freertos-plus-tcp	Affected: 4.0.0 , < 4.1.1 (custom) cpe:2.3:a:amazon:freertos-plus-tcp:4.0.0:::::::*

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:amazon:freertos-plus-tcp:4.0.0:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "freertos-plus-tcp",
            "vendor": "amazon",
            "versions": [
              {
                "lessThan": "4.1.1",
                "status": "affected",
                "version": "4.0.0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-38373",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-07-05T14:20:06.049891Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-07-05T20:19:11.301Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T04:04:25.337Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-ppcp-rg65-58mv",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-ppcp-rg65-58mv"
          },
          {
            "name": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.1.1",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.1.1"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "FreeRTOS-Plus-TCP",
          "vendor": "FreeRTOS",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 4.0.0, \u003c= 4.1.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "FreeRTOS-Plus-TCP is a lightweight TCP/IP stack for FreeRTOS. FreeRTOS-Plus-TCP versions 4.0.0 through 4.1.0 contain a buffer over-read issue in the DNS Response Parser when parsing domain names in a DNS response. A carefully crafted DNS response with domain name length value greater than the actual domain name length, could cause the parser to read beyond the DNS response buffer. This issue affects applications using DNS functionality of the FreeRTOS-Plus-TCP stack. Applications that do not use DNS functionality are not affected, even when the DNS functionality is enabled. This vulnerability has been patched in version 4.1.1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.6,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-126",
              "description": "CWE-126: Buffer Over-read",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-06-24T16:23:00.162Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-ppcp-rg65-58mv",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-ppcp-rg65-58mv"
        },
        {
          "name": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.1.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.1.1"
        }
      ],
      "source": {
        "advisory": "GHSA-ppcp-rg65-58mv",
        "discovery": "UNKNOWN"
      },
      "title": "FreeRTOS-Plus-TCP Buffer Over-Read in DNS Response Parser"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2024-38373",
    "datePublished": "2024-06-24T16:23:00.162Z",
    "dateReserved": "2024-06-14T14:16:16.466Z",
    "dateUpdated": "2024-08-02T04:04:25.337Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Find a vulnerability

Search criteria

6 vulnerabilities found for FreeRTOS-Plus-TCP by FreeRTOS

CVE-2026-102552 (GCVE-0-2026-102552)

CVE-2026-102551 (GCVE-0-2026-102551)

CVE-2024-38373 (GCVE-0-2024-38373)

CVE-2026-102552 (GCVE-0-2026-102552)

CVE-2026-102551 (GCVE-0-2026-102551)

CVE-2024-38373 (GCVE-0-2024-38373)