CVE-2025-5449 (GCVE-0-2025-5449)

Vulnerability from cvelistv5 – Published: 2025-07-25 17:19 – Updated: 2026-08-31 11:28
VLAI
Title
Libssh: integer overflow in libssh sftp server packet length validation leading to denial of service
Summary
A flaw was found in the SFTP server message decoding logic of libssh. The issue occurs due to an incorrect packet length check that allows an integer overflow when handling large payload sizes on 32-bit systems. This issue leads to failed memory allocation and causes the server process to crash, resulting in a denial of service.
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 2025-07-25 17:33 UTC
CWE
  • CWE-190 - Integer Overflow or Wraparound
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1063 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Affected: 0.11.0 , ≤ 0.11.1 (semver)
Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
Create a notification for this product.
Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
Create a notification for this product.
Date Public
2025-06-24 00:00
Credits
Red Hat would like to thank Ronald Crane for reporting this issue.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-5449",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-07-25T17:33:59.050638Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-07-25T17:34:41.318Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://www.libssh.org",
          "defaultStatus": "unaffected",
          "packageName": "libssh",
          "versions": [
            {
              "lessThanOrEqual": "0.11.1",
              "status": "affected",
              "version": "0.11.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:10"
          ],
          "defaultStatus": "unaffected",
          "packageName": "libssh",
          "product": "Red Hat Enterprise Linux 10",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:6"
          ],
          "defaultStatus": "unaffected",
          "packageName": "libssh2",
          "product": "Red Hat Enterprise Linux 6",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:7"
          ],
          "defaultStatus": "unaffected",
          "packageName": "libssh2",
          "product": "Red Hat Enterprise Linux 7",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:8"
          ],
          "defaultStatus": "unaffected",
          "packageName": "libssh",
          "product": "Red Hat Enterprise Linux 8",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:9"
          ],
          "defaultStatus": "unaffected",
          "packageName": "libssh",
          "product": "Red Hat Enterprise Linux 9",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift:4"
          ],
          "defaultStatus": "unaffected",
          "packageName": "openshift/ose-rhel-coreos-8",
          "product": "Red Hat OpenShift Container Platform 4",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift:4"
          ],
          "defaultStatus": "unaffected",
          "packageName": "openshift/ose-rhel-coreos-9",
          "product": "Red Hat OpenShift Container Platform 4",
          "vendor": "Red Hat"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Red Hat would like to thank Ronald Crane for reporting this issue."
        }
      ],
      "datePublic": "2025-06-24T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw was found in the SFTP server message decoding logic of libssh. The issue occurs due to an incorrect packet length check that allows an integer overflow when handling large payload sizes on 32-bit systems. This issue leads to failed memory allocation and causes the server process to crash, resulting in a denial of service."
        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "namespace": "https://access.redhat.com/security/updates/classification/",
              "value": "Moderate"
            },
            "type": "Red Hat severity rating"
          }
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-190",
              "description": "Integer Overflow or Wraparound",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-31T11:28:45.660Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "tags": [
            "vdb-entry",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/security/cve/CVE-2025-5449"
        },
        {
          "name": "RHBZ#2369705",
          "tags": [
            "issue-tracking",
            "x_refsource_REDHAT"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2369705"
        },
        {
          "url": "https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.11\u0026id=261612179f740bc62ba363d98b3bd5e5573a811f"
        },
        {
          "url": "https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.11\u0026id=3443aec90188d6aab9282afc80a81df5ab72c4da"
        },
        {
          "url": "https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.11\u0026id=5504ff40515439a5fecbb17da7483000c4d12eb7"
        },
        {
          "url": "https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.11\u0026id=78485f446af9b30e37eb8f177b81940710d54496"
        },
        {
          "url": "https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.11\u0026id=f79ec51b7fd519dbc5737a7ba826e3ed093f6ceb"
        },
        {
          "url": "https://www.libssh.org/security/advisories/CVE-2025-5449.txt"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2025-06-02T06:50:26.935Z",
          "value": "Reported to Red Hat."
        },
        {
          "lang": "en",
          "time": "2025-06-24T00:00:00.000Z",
          "value": "Made public."
        }
      ],
      "title": "Libssh: integer overflow in libssh sftp server packet length validation leading to denial of service",
      "workarounds": [
        {
          "lang": "en",
          "value": "Mitigation for this issue is either not available or the currently available options don\u0027t meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."
        }
      ],
      "x_generator": {
        "engine": "cvelib 1.8.0"
      },
      "x_redhatCweChain": "CWE-190: Integer Overflow or Wraparound"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2025-5449",
    "datePublished": "2025-07-25T17:19:39.345Z",
    "dateReserved": "2025-06-02T07:10:17.845Z",
    "dateUpdated": "2026-08-31T11:28:45.660Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-5449",
      "date": "2026-10-29",
      "epss": "0.01027",
      "percentile": "0.63555"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "collectionURL": "https://www.libssh.org",
                "defaultStatus": "unaffected",
                "packageName": "libssh",
                "versions": [
                  {
                    "lessThanOrEqual": "0.11.1",
                    "status": "affected",
                    "version": "0.11.0",
                    "versionType": "semver"
                  }
                ]
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:10"
                ],
                "defaultStatus": "unaffected",
                "packageName": "libssh",
                "product": "Red Hat Enterprise Linux 10",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:6"
                ],
                "defaultStatus": "unaffected",
                "packageName": "libssh2",
                "product": "Red Hat Enterprise Linux 6",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:7"
                ],
                "defaultStatus": "unaffected",
                "packageName": "libssh2",
                "product": "Red Hat Enterprise Linux 7",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:8"
                ],
                "defaultStatus": "unaffected",
                "packageName": "libssh",
                "product": "Red Hat Enterprise Linux 8",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/o:redhat:enterprise_linux:9"
                ],
                "defaultStatus": "unaffected",
                "packageName": "libssh",
                "product": "Red Hat Enterprise Linux 9",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:openshift:4"
                ],
                "defaultStatus": "unaffected",
                "packageName": "openshift/ose-rhel-coreos-8",
                "product": "Red Hat OpenShift Container Platform 4",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:openshift:4"
                ],
                "defaultStatus": "unaffected",
                "packageName": "openshift/ose-rhel-coreos-9",
                "product": "Red Hat OpenShift Container Platform 4",
                "vendor": "Red Hat"
              }
            ],
            "source": "secalert@redhat.com"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:libssh:libssh:0.11.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "57396877-0D7A-4506-8C21-38EC7DFB3F04",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:libssh:libssh:0.11.1:*:*:*:*:*:*:*",
                    "matchCriteriaId": "8C4817DC-731C-4EA3-BF8A-FCCE4AB8AF87",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "A flaw was found in the SFTP server message decoding logic of libssh. The issue occurs due to an incorrect packet length check that allows an integer overflow when handling large payload sizes on 32-bit systems. This issue leads to failed memory allocation and causes the server process to crash, resulting in a denial of service."
          },
          {
            "lang": "es",
            "value": "Se detect\u00f3 una falla en la l\u00f3gica de decodificaci\u00f3n de mensajes del servidor SFTP de libssh. El problema se debe a una comprobaci\u00f3n incorrecta de la longitud del paquete, lo que permite un desbordamiento de enteros al gestionar payloads de gran tama\u00f1o en sistemas de 32 bits. Este problema provoca errores en la asignaci\u00f3n de memoria y el bloqueo del proceso del servidor, lo que resulta en una denegaci\u00f3n de servicio."
          }
        ],
        "id": "CVE-2025-5449",
        "lastModified": "2026-08-31T12:17:53.477",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 6.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 3.6,
              "source": "secalert@redhat.com",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 6.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2025-5449",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-07-25T17:33:59.050638Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2025-07-25T18:15:26.967",
        "references": [
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://access.redhat.com/security/cve/CVE-2025-5449"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Issue Tracking",
              "Third Party Advisory"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2369705"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Patch"
            ],
            "url": "https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.11\u0026id=261612179f740bc62ba363d98b3bd5e5573a811f"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Patch"
            ],
            "url": "https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.11\u0026id=3443aec90188d6aab9282afc80a81df5ab72c4da"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Patch"
            ],
            "url": "https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.11\u0026id=5504ff40515439a5fecbb17da7483000c4d12eb7"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Patch"
            ],
            "url": "https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.11\u0026id=78485f446af9b30e37eb8f177b81940710d54496"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Patch"
            ],
            "url": "https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.11\u0026id=f79ec51b7fd519dbc5737a7ba826e3ed093f6ceb"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.libssh.org/security/advisories/CVE-2025-5449.txt"
          }
        ],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-190"
              }
            ],
            "source": "secalert@redhat.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-31T11:28:42+00:00",
      "cve": "CVE-2025-5449",
      "id": "CVE-2025-5449",
      "initial_release_date": "2025-06-24T00:00:00+00:00",
      "product_status:known_not_affected": "22",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "libssh: Integer Overflow in libssh SFTP Server Packet Length Validation Leading to Denial of Service",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-5449.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-10-16T01:08:39Z",
      "cve": "CVE-2025-5449",
      "id": "CVE-2025-5449",
      "initial_release_date": "2025-06-24T23:24:57Z",
      "product_status:known_affected": "0",
      "product_status:known_not_affected": "267",
      "product_status:recommended": "16",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-5449",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2025/cve-2025-5449.json",
      "version": "19"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2025-5449",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-07-25T17:33:59.050638Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-07-25T17:34:02.421Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "collectionURL": "https://www.libssh.org",
              "defaultStatus": "unaffected",
              "packageName": "libssh",
              "versions": [
                {
                  "lessThanOrEqual": "0.11.1",
                  "status": "affected",
                  "version": "0.11.0",
                  "versionType": "semver"
                }
              ]
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:enterprise_linux:10"
              ],
              "defaultStatus": "unaffected",
              "packageName": "libssh",
              "product": "Red Hat Enterprise Linux 10",
              "vendor": "Red Hat"
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:enterprise_linux:6"
              ],
              "defaultStatus": "unaffected",
              "packageName": "libssh2",
              "product": "Red Hat Enterprise Linux 6",
              "vendor": "Red Hat"
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:enterprise_linux:7"
              ],
              "defaultStatus": "unaffected",
              "packageName": "libssh2",
              "product": "Red Hat Enterprise Linux 7",
              "vendor": "Red Hat"
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:enterprise_linux:8"
              ],
              "defaultStatus": "unaffected",
              "packageName": "libssh",
              "product": "Red Hat Enterprise Linux 8",
              "vendor": "Red Hat"
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/o:redhat:enterprise_linux:9"
              ],
              "defaultStatus": "unaffected",
              "packageName": "libssh",
              "product": "Red Hat Enterprise Linux 9",
              "vendor": "Red Hat"
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:openshift:4"
              ],
              "defaultStatus": "unaffected",
              "packageName": "openshift/ose-rhel-coreos-8",
              "product": "Red Hat OpenShift Container Platform 4",
              "vendor": "Red Hat"
            },
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:openshift:4"
              ],
              "defaultStatus": "unaffected",
              "packageName": "openshift/ose-rhel-coreos-9",
              "product": "Red Hat OpenShift Container Platform 4",
              "vendor": "Red Hat"
            }
          ],
          "credits": [
            {
              "lang": "en",
              "value": "Red Hat would like to thank Ronald Crane for reporting this issue."
            }
          ],
          "datePublic": "2025-06-24T00:00:00.000Z",
          "descriptions": [
            {
              "lang": "en",
              "value": "A flaw was found in the SFTP server message decoding logic of libssh. The issue occurs due to an incorrect packet length check that allows an integer overflow when handling large payload sizes on 32-bit systems. This issue leads to failed memory allocation and causes the server process to crash, resulting in a denial of service."
            }
          ],
          "metrics": [
            {
              "other": {
                "content": {
                  "namespace": "https://access.redhat.com/security/updates/classification/",
                  "value": "Moderate"
                },
                "type": "Red Hat severity rating"
              }
            },
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 6.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "format": "CVSS"
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-190",
                  "description": "Integer Overflow or Wraparound",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-31T11:28:45.660Z",
            "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
            "shortName": "redhat"
          },
          "references": [
            {
              "tags": [
                "vdb-entry",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/security/cve/CVE-2025-5449"
            },
            {
              "name": "RHBZ#2369705",
              "tags": [
                "issue-tracking",
                "x_refsource_REDHAT"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2369705"
            },
            {
              "url": "https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.11\u0026id=261612179f740bc62ba363d98b3bd5e5573a811f"
            },
            {
              "url": "https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.11\u0026id=3443aec90188d6aab9282afc80a81df5ab72c4da"
            },
            {
              "url": "https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.11\u0026id=5504ff40515439a5fecbb17da7483000c4d12eb7"
            },
            {
              "url": "https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.11\u0026id=78485f446af9b30e37eb8f177b81940710d54496"
            },
            {
              "url": "https://git.libssh.org/projects/libssh.git/commit/?h=stable-0.11\u0026id=f79ec51b7fd519dbc5737a7ba826e3ed093f6ceb"
            },
            {
              "url": "https://www.libssh.org/security/advisories/CVE-2025-5449.txt"
            }
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2025-06-02T06:50:26.935Z",
              "value": "Reported to Red Hat."
            },
            {
              "lang": "en",
              "time": "2025-06-24T00:00:00.000Z",
              "value": "Made public."
            }
          ],
          "title": "Libssh: integer overflow in libssh sftp server packet length validation leading to denial of service",
          "workarounds": [
            {
              "lang": "en",
              "value": "Mitigation for this issue is either not available or the currently available options don\u0027t meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."
            }
          ],
          "x_generator": {
            "engine": "cvelib 1.8.0"
          },
          "x_redhatCweChain": "CWE-190: Integer Overflow or Wraparound"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "assignerShortName": "redhat",
        "cveId": "CVE-2025-5449",
        "datePublished": "2025-07-25T17:19:39.345Z",
        "dateReserved": "2025-06-02T07:10:17.845Z",
        "dateUpdated": "2026-08-31T11:28:45.660Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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

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.

Loading timeline…




    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.