Vulnerability-Lookup

CVE-2026-8836 (GCVE-0-2026-8836)

Vulnerability from cvelistv5 – Published: 2026-05-18 18:45 – Updated: 2026-08-22 08:42 X_Open Source

Title

lwIP snmpv3 USM snmp_msg.c snmp_parse_inbound_frame stack-based overflow

Summary

A vulnerability was found in lwIP up to 2.2.1. Affected is the function snmp_parse_inbound_frame of the file src/apps/snmp/snmp_msg.c of the component snmpv3 USM Handler. Performing a manipulation of the argument msgAuthenticationParameters results in stack-based buffer overflow. The attack may be initiated remotely. The patch is named 0c957ec03054eb6c8205e9c9d1d05d90ada3898c. It is suggested to install a patch to address this issue. Two separate issue reports were submitted to the project. Their processing was merged as a duplicate.

Severity

9.3 (Critical)


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

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

9.8 (Critical)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-18 19:19 UTC

CWE

CWE-121 - Stack-based Buffer Overflow
CWE-119 - Memory Corruption

Assigner

VulDB CNA under the mitre root

CNA scorecard B 83/100 over 3859 records in the last 180 days details

References

8 references

URL	Tags
https://vuldb.com/vuln/364474	vdb-entrytechnical-description
https://vuldb.com/vuln/364474/cti	signaturepermissions-required
https://vuldb.com/cve/CVE-2026-8836	third-party-advisory
https://vuldb.com/submit/829798	third-party-advisory
https://savannah.nongnu.org/bugs/?68055	broken-link
https://cgit.git.savannah.gnu.org/cgit/lwip.git/c…	broken-linkpatch
https://github.com/lwip-tcpip/lwip/commit/0c957ec…	patch
https://savannah.nongnu.org/bugs/?68194	broken-link

Impacted products

1 product

Vendor	Product	Version	CPE status
n/a	lwIP	Affected: 2.1.0 Affected: 2.1.1 Affected: 2.1.2 Affected: 2.1.3 Affected: 2.2.0 Affected: 2.2.1 cpe:2.3:a:lwip:lwip::::::::

Credits

Aaron Wasserman (Praetorian) 0rbitingZer0 (VulDB User) VulDB CNA Team

Show details on NVD website

JSON

To clipboard

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                  "description": "Memory Corruption",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-22T08:42:12.843Z",
            "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
            "shortName": "VulDB"
          },
          "references": [
            {
              "name": "VDB-364474 | lwIP snmpv3 USM snmp_msg.c snmp_parse_inbound_frame stack-based overflow",
              "tags": [
                "vdb-entry",
                "technical-description"
              ],
              "url": "https://vuldb.com/vuln/364474"
            },
            {
              "name": "VDB-364474 | CTI Indicators (IOB, IOC, IOA)",
              "tags": [
                "signature",
                "permissions-required"
              ],
              "url": "https://vuldb.com/vuln/364474/cti"
            },
            {
              "name": "CVE-2026-8836 | CVE Analysis and Report",
              "tags": [
                "third-party-advisory"
              ],
              "url": "https://vuldb.com/cve/CVE-2026-8836"
            },
            {
              "name": "Submit #829798 | lwIP 2.1.0 Stack-based Buffer Overflow",
              "tags": [
                "third-party-advisory"
              ],
              "url": "https://vuldb.com/submit/829798"
            },
            {
              "tags": [
                "broken-link"
              ],
              "url": "https://savannah.nongnu.org/bugs/?68055"
            },
            {
              "tags": [
                "broken-link",
                "patch"
              ],
              "url": "https://cgit.git.savannah.gnu.org/cgit/lwip.git/commit/?id=0c957ec03054eb6c8205e9c9d1d05d90ada3898c"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://github.com/lwip-tcpip/lwip/commit/0c957ec03054eb6c8205e9c9d1d05d90ada3898c"
            },
            {
              "tags": [
                "broken-link"
              ],
              "url": "https://savannah.nongnu.org/bugs/?68194"
            }
          ],
          "tags": [
            "x_open-source"
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2026-05-18T00:00:00.000Z",
              "value": "Advisory disclosed"
            },
            {
              "lang": "en",
              "time": "2026-05-18T02:00:00.000Z",
              "value": "VulDB entry created"
            },
            {
              "lang": "en",
              "time": "2026-08-22T10:46:45.000Z",
              "value": "VulDB entry last update"
            }
          ],
          "title": "lwIP snmpv3 USM snmp_msg.c snmp_parse_inbound_frame stack-based overflow",
          "x_generator": [
            "VulDB PVTS v202608"
          ]
        }
      },
      "cveMetadata": {
        "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "assignerShortName": "VulDB",
        "cveId": "CVE-2026-8836",
        "datePublished": "2026-05-18T18:45:12.791Z",
        "dateReserved": "2026-05-18T14:20:09.110Z",
        "dateUpdated": "2026-08-22T08:42:12.843Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-8836

Vulnerability from fkie_nvd - Published: 2026-05-18 19:16 - Updated: 2026-08-22 09:16

Severity

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	cna@vuldb.com	https://cgit.git.savannah.gnu.org/cgit/lwip.git/commit/?id=0c957ec03054eb6c8205e9c9d1d05d90ada3898c
	cna@vuldb.com	https://github.com/lwip-tcpip/lwip/commit/0c957ec03054eb6c8205e9c9d1d05d90ada3898c
	cna@vuldb.com	https://savannah.nongnu.org/bugs/?68055
	cna@vuldb.com	https://savannah.nongnu.org/bugs/?68194
	cna@vuldb.com	https://vuldb.com/cve/CVE-2026-8836
	cna@vuldb.com	https://vuldb.com/submit/829798
	cna@vuldb.com	https://vuldb.com/vuln/364474
	cna@vuldb.com	https://vuldb.com/vuln/364474/cti

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:lwip:lwip:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "snmpv3 USM Handler"
          ],
          "product": "lwIP",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "2.1.0"
            },
            {
              "status": "affected",
              "version": "2.1.1"
            },
            {
              "status": "affected",
              "version": "2.1.2"
            },
            {
              "status": "affected",
              "version": "2.1.3"
            },
            {
              "status": "affected",
              "version": "2.2.0"
            },
            {
              "status": "affected",
              "version": "2.2.1"
            }
          ]
        }
      ],
      "source": "cna@vuldb.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability was found in lwIP up to 2.2.1. Affected is the function snmp_parse_inbound_frame of the file src/apps/snmp/snmp_msg.c of the component snmpv3 USM Handler. Performing a manipulation of the argument msgAuthenticationParameters results in stack-based buffer overflow. The attack may be initiated remotely. The patch is named 0c957ec03054eb6c8205e9c9d1d05d90ada3898c. It is suggested to install a patch to address this issue. Two separate issue reports were submitted to the project. Their processing was merged as a duplicate."
    }
  ],
  "id": "CVE-2026-8836",
  "lastModified": "2026-08-22T09:16:53.713",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 10.0,
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 10.0,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "cna@vuldb.com",
        "type": "Secondary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "cna@vuldb.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.9,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "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:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "cna@vuldb.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-8836",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-18T19:19:42.938168Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-18T19:16:28.533",
  "references": [
    {
      "source": "cna@vuldb.com",
      "url": "https://cgit.git.savannah.gnu.org/cgit/lwip.git/commit/?id=0c957ec03054eb6c8205e9c9d1d05d90ada3898c"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/lwip-tcpip/lwip/commit/0c957ec03054eb6c8205e9c9d1d05d90ada3898c"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://savannah.nongnu.org/bugs/?68055"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://savannah.nongnu.org/bugs/?68194"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/cve/CVE-2026-8836"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/submit/829798"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/364474"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/364474/cti"
    }
  ],
  "sourceIdentifier": "cna@vuldb.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        },
        {
          "lang": "en",
          "value": "CWE-121"
        }
      ],
      "source": "cna@vuldb.com",
      "type": "Secondary"
    }
  ]
}

GHSA-3W8M-3W76-F6MH

Vulnerability from github – Published: 2026-05-18 21:31 – Updated: 2026-08-22 09:30

Details

Severity

9.8 (Critical)


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

9.3 (Critical)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-8836"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-18T19:16:28Z",
    "severity": "CRITICAL"
  },
  "details": "A vulnerability was found in lwIP up to 2.2.1. Affected is the function snmp_parse_inbound_frame of the file src/apps/snmp/snmp_msg.c of the component snmpv3 USM Handler. Performing a manipulation of the argument msgAuthenticationParameters results in stack-based buffer overflow. The attack may be initiated remotely. The patch is named 0c957ec03054eb6c8205e9c9d1d05d90ada3898c. It is suggested to install a patch to address this issue.",
  "id": "GHSA-3w8m-3w76-f6mh",
  "modified": "2026-08-22T09:30:25Z",
  "published": "2026-05-18T21:31:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8836"
    },
    {
      "type": "WEB",
      "url": "https://github.com/lwip-tcpip/lwip/commit/0c957ec03054eb6c8205e9c9d1d05d90ada3898c"
    },
    {
      "type": "WEB",
      "url": "https://cgit.git.savannah.gnu.org/cgit/lwip.git/commit/?id=0c957ec03054eb6c8205e9c9d1d05d90ada3898c"
    },
    {
      "type": "WEB",
      "url": "https://savannah.nongnu.org/bugs/?68055"
    },
    {
      "type": "WEB",
      "url": "https://savannah.nongnu.org/bugs/?68194"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/cve/CVE-2026-8836"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/829798"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/364474"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/364474/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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"
    }
  ]
}

OESA-2026-2480 (CVE-2026-8836)

Vulnerability from osv_openeuler – Published: 2026-05-29 11:11 – Updated: 2026-08-06 11:11 – Source website

Summary

lwip security update

Details

lwip is a small independent implementation of the TCP/IP protocol suite.

Security Fix(es):

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-8836	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "lwip-2.2.0-76.oe2403.aarch64.rpm",
          "lwip-2.2.0-76.oe2403sp1.aarch64.rpm",
          "lwip-2.2.0-76.oe2403sp3.aarch64.rpm"
        ],
        "src": [
          "lwip-2.2.0-76.oe2403.src.rpm",
          "lwip-2.2.0-76.oe2403sp1.src.rpm",
          "lwip-2.2.0-76.oe2403sp3.src.rpm"
        ],
        "x86_64": [
          "lwip-2.2.0-76.oe2403.x86_64.rpm",
          "lwip-2.2.0-76.oe2403sp1.x86_64.rpm",
          "lwip-2.2.0-76.oe2403sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS",
        "name": "lwip",
        "purl": "pkg:rpm/openEuler/lwip\u0026distro=openEuler-24.03-LTS"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2.0-76.oe2403sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "lwip-2.2.0-76.oe2403sp1.aarch64.rpm"
        ],
        "src": [
          "lwip-2.2.0-76.oe2403sp1.src.rpm"
        ],
        "x86_64": [
          "lwip-2.2.0-76.oe2403sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP1",
        "name": "lwip",
        "purl": "pkg:rpm/openEuler/lwip\u0026distro=openEuler-24.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2.0-76.oe2403sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "lwip-2.2.0-76.oe2403sp3.aarch64.rpm"
        ],
        "src": [
          "lwip-2.2.0-76.oe2403sp3.src.rpm"
        ],
        "x86_64": [
          "lwip-2.2.0-76.oe2403sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP3",
        "name": "lwip",
        "purl": "pkg:rpm/openEuler/lwip\u0026distro=openEuler-24.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2.0-76.oe2403sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "lwip-2.2.0-76.oe2003sp4.aarch64.rpm"
        ],
        "src": [
          "lwip-2.2.0-76.oe2003sp4.src.rpm"
        ],
        "x86_64": [
          "lwip-2.2.0-76.oe2003sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP4",
        "name": "lwip",
        "purl": "pkg:rpm/openEuler/lwip\u0026distro=openEuler-20.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2.0-76.oe2003sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "lwip-2.2.0-76.oe2203sp4.aarch64.rpm"
        ],
        "src": [
          "lwip-2.2.0-76.oe2203sp4.src.rpm"
        ],
        "x86_64": [
          "lwip-2.2.0-76.oe2203sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP4",
        "name": "lwip",
        "purl": "pkg:rpm/openEuler/lwip\u0026distro=openEuler-22.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2.0-76.oe2203sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Critical"
  },
  "details": "lwip is a small independent implementation of the TCP/IP protocol suite.\r\n\r\nSecurity Fix(es):\n\nA vulnerability was found in lwIP up to 2.2.1. Affected is the function snmp_parse_inbound_frame of the file src/apps/snmp/snmp_msg.c of the component snmpv3 USM Handler. Performing a manipulation of the argument msgAuthenticationParameters results in stack-based buffer overflow. The attack may be initiated remotely. The patch is named 0c957ec03054eb6c8205e9c9d1d05d90ada3898c. It is suggested to install a patch to address this issue.(CVE-2026-8836)",
  "id": "OESA-2026-2480",
  "modified": "2026-08-06T11:11:26Z",
  "published": "2026-05-29T11:11:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2480"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8836"
    }
  ],
  "schema_version": "1.7.2",
  "summary": "lwip security update",
  "upstream": [
    "CVE-2026-8836"
  ]
}

UBUNTU-CVE-2026-8836 (CVE-2026-8836)

Vulnerability from osv_ubuntu – Published: 2026-05-18 19:16 – Updated: 2026-10-17 09:37 – Source website

Details

Severity

9.8 (Critical)


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

8.9 (High)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-8836	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-8836	REPORT
	https://savannah.nongnu.org/bugs/?68194	REPORT
	https://cgit.git.savannah.gnu.org/cgit/lwip.git/c…	REPORT
	https://github.com/lwip-tcpip/lwip/commit/0c957ec…	REPORT
	https://vuldb.com/submit/829798	REPORT
	https://vuldb.com/vuln/364474	REPORT
	https://vuldb.com/vuln/364474/cti	REPORT
	https://ubuntu.com/security/notices/USN-8423-1	ADVISORY

JSON

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{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "liblwip0",
            "binary_version": "2.1.2+dfsg1-4ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "lwip",
        "purl": "pkg:deb/ubuntu/lwip@2.1.2+dfsg1-4ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.2+dfsg1-4ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.1.2-3",
        "2.1.2-5.1",
        "2.1.2+dfsg1-1",
        "2.1.2+dfsg1-4"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "liblwip0",
            "binary_version": "2.1.3+dfsg1-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "lwip",
        "purl": "pkg:deb/ubuntu/lwip@2.1.3+dfsg1-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.3+dfsg1-1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.1.2+dfsg1-8",
        "2.1.2+dfsg1-9",
        "2.1.3+dfsg1-1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "liblwip0t64",
            "binary_version": "2.2.0+dfsg1-6.1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "lwip",
        "purl": "pkg:deb/ubuntu/lwip@2.2.0+dfsg1-6.1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2.0+dfsg1-6.1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.1.3+dfsg1-2",
        "2.1.3+dfsg1-4",
        "2.2.0+dfsg1-2",
        "2.2.0+dfsg1-3",
        "2.2.0+dfsg1-4",
        "2.2.0+dfsg1-5",
        "2.2.0+dfsg1-6",
        "2.2.0+dfsg1-6.1",
        "2.2.0+dfsg1-6.1build1",
        "2.2.0+dfsg1-6.1build2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "liblwip0t64",
            "binary_version": "2.2.1+dfsg1-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "lwip",
        "purl": "pkg:deb/ubuntu/lwip@2.2.1+dfsg1-2?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.2.1+dfsg1-1",
        "2.2.1+dfsg1-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "liblwip0t64",
            "binary_version": "2.2.1+dfsg1-7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.10",
        "name": "lwip",
        "purl": "pkg:deb/ubuntu/lwip@2.2.1+dfsg1-7?arch=source\u0026distro=stonking"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.2.1+dfsg1-4",
        "2.2.1+dfsg1-5",
        "2.2.1+dfsg1-7"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "liblwip0t64",
            "binary_version": "2.2.1+dfsg1-4ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:26.04:LTS",
        "name": "lwip",
        "purl": "pkg:deb/ubuntu/lwip@2.2.1+dfsg1-4ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2.1+dfsg1-4ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.2.1+dfsg1-2",
        "2.2.1+dfsg1-3",
        "2.2.1+dfsg1-4"
      ]
    }
  ],
  "aliases": [],
  "details": "A vulnerability was found in lwIP up to 2.2.1. Affected is the function snmp_parse_inbound_frame of the file src/apps/snmp/snmp_msg.c of the component snmpv3 USM Handler. Performing a manipulation of the argument msgAuthenticationParameters results in stack-based buffer overflow. The attack may be initiated remotely. The patch is named 0c957ec03054eb6c8205e9c9d1d05d90ada3898c. It is suggested to install a patch to address this issue. Two separate issue reports were submitted to the project. Their processing was merged as a duplicate.",
  "id": "UBUNTU-CVE-2026-8836",
  "modified": "2026-10-17T09:37:56Z",
  "published": "2026-05-18T19:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-8836"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-8836"
    },
    {
      "type": "REPORT",
      "url": "https://savannah.nongnu.org/bugs/?68194"
    },
    {
      "type": "REPORT",
      "url": "https://cgit.git.savannah.gnu.org/cgit/lwip.git/commit/?id=0c957ec03054eb6c8205e9c9d1d05d90ada3898c"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/lwip-tcpip/lwip/commit/0c957ec03054eb6c8205e9c9d1d05d90ada3898c"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/submit/829798"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/vuln/364474"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/vuln/364474/cti"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8423-1"
    }
  ],
  "related": [
    "USN-8423-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-8836"
  ]
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-8836 (GCVE-0-2026-8836)

FKIE_CVE-2026-8836

GHSA-3W8M-3W76-F6MH

OESA-2026-2480 (CVE-2026-8836)

UBUNTU-CVE-2026-8836 (CVE-2026-8836)

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour