GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2016-9941 (GCVE-0-2016-9941)

Vulnerability from cvelistv5 – Published: 2016-12-31 18:00 – Updated: 2024-08-06 03:07
VLAI
Summary
Heap-based buffer overflow in rfbproto.c in LibVNCClient in LibVNCServer before 0.9.11 allows remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted FramebufferUpdate message containing a subrectangle outside of the client drawing area.
CWE
  • n/a
References
URL Tags
http://www.securityfocus.com/bid/95170 vdb-entryx_refsource_BID
https://github.com/LibVNC/libvncserver/pull/137 x_refsource_CONFIRM
http://www.debian.org/security/2017/dsa-3753 vendor-advisoryx_refsource_DEBIAN
https://security.gentoo.org/glsa/201702-24 vendor-advisoryx_refsource_GENTOO
https://github.com/LibVNC/libvncserver/releases/t… x_refsource_CONFIRM
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
https://usn.ubuntu.com/4587-1/ vendor-advisoryx_refsource_UBUNTU
Date Public
2016-12-31 00:00
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-06T03:07:31.407Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "95170",
            "tags": [
              "vdb-entry",
              "x_refsource_BID",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/95170"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/LibVNC/libvncserver/pull/137"
          },
          {
            "name": "DSA-3753",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "http://www.debian.org/security/2017/dsa-3753"
          },
          {
            "name": "GLSA-201702-24",
            "tags": [
              "vendor-advisory",
              "x_refsource_GENTOO",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/201702-24"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/LibVNC/libvncserver/releases/tag/LibVNCServer-0.9.11"
          },
          {
            "name": "[debian-lts-announce] 20191030 [SECURITY] [DLA 1979-1] italc security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html"
          },
          {
            "name": "USN-4587-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/4587-1/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2016-12-31T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Heap-based buffer overflow in rfbproto.c in LibVNCClient in LibVNCServer before 0.9.11 allows remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted FramebufferUpdate message containing a subrectangle outside of the client drawing area."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-10-23T12:06:18.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "name": "95170",
          "tags": [
            "vdb-entry",
            "x_refsource_BID"
          ],
          "url": "http://www.securityfocus.com/bid/95170"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/LibVNC/libvncserver/pull/137"
        },
        {
          "name": "DSA-3753",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "http://www.debian.org/security/2017/dsa-3753"
        },
        {
          "name": "GLSA-201702-24",
          "tags": [
            "vendor-advisory",
            "x_refsource_GENTOO"
          ],
          "url": "https://security.gentoo.org/glsa/201702-24"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/LibVNC/libvncserver/releases/tag/LibVNCServer-0.9.11"
        },
        {
          "name": "[debian-lts-announce] 20191030 [SECURITY] [DLA 1979-1] italc security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html"
        },
        {
          "name": "USN-4587-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/4587-1/"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2016-9941",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Heap-based buffer overflow in rfbproto.c in LibVNCClient in LibVNCServer before 0.9.11 allows remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted FramebufferUpdate message containing a subrectangle outside of the client drawing area."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "95170",
              "refsource": "BID",
              "url": "http://www.securityfocus.com/bid/95170"
            },
            {
              "name": "https://github.com/LibVNC/libvncserver/pull/137",
              "refsource": "CONFIRM",
              "url": "https://github.com/LibVNC/libvncserver/pull/137"
            },
            {
              "name": "DSA-3753",
              "refsource": "DEBIAN",
              "url": "http://www.debian.org/security/2017/dsa-3753"
            },
            {
              "name": "GLSA-201702-24",
              "refsource": "GENTOO",
              "url": "https://security.gentoo.org/glsa/201702-24"
            },
            {
              "name": "https://github.com/LibVNC/libvncserver/releases/tag/LibVNCServer-0.9.11",
              "refsource": "CONFIRM",
              "url": "https://github.com/LibVNC/libvncserver/releases/tag/LibVNCServer-0.9.11"
            },
            {
              "name": "[debian-lts-announce] 20191030 [SECURITY] [DLA 1979-1] italc security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html"
            },
            {
              "name": "USN-4587-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/4587-1/"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2016-9941",
    "datePublished": "2016-12-31T18:00:00.000Z",
    "dateReserved": "2016-12-13T00:00:00.000Z",
    "dateUpdated": "2024-08-06T03:07:31.407Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2016-9941",
      "date": "2026-09-18",
      "epss": "0.03732",
      "percentile": "0.89319"
    },
    "fkie_nvd": {
      "configurations": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:libvncserver_project:libvncserver:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "F09960B4-2704-4B36-B056-476F4DD30C9B",
                  "versionEndIncluding": "0.9.10",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Heap-based buffer overflow in rfbproto.c in LibVNCClient in LibVNCServer before 0.9.11 allows remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted FramebufferUpdate message containing a subrectangle outside of the client drawing area."
        },
        {
          "lang": "es",
          "value": "Desbordamiento de b\u00fafer basado en memoria din\u00e1mica en rfbproto.c en LibVNCClient en LibVNCServer en versiones anteriores a 0.9.11 permite a servidores remotos provocar una denegaci\u00f3n de servicio (ca\u00edda de aplicaci\u00f3n) o posiblemente ejecutar c\u00f3digo arbitrario a trav\u00e9s de un mensaje FramebufferUpdate manipulado que contiene un subrect\u00e1ngulo fuera del \u00e1rea de dibujo del cliente."
        }
      ],
      "id": "CVE-2016-9941",
      "lastModified": "2024-11-21T03:02:03.153",
      "metrics": {
        "cvssMetricV2": [
          {
            "acInsufInfo": false,
            "baseSeverity": "HIGH",
            "cvssData": {
              "accessComplexity": "LOW",
              "accessVector": "NETWORK",
              "authentication": "NONE",
              "availabilityImpact": "PARTIAL",
              "baseScore": 7.5,
              "confidentialityImpact": "PARTIAL",
              "integrityImpact": "PARTIAL",
              "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
              "version": "2.0"
            },
            "exploitabilityScore": 10.0,
            "impactScore": 6.4,
            "obtainAllPrivilege": false,
            "obtainOtherPrivilege": false,
            "obtainUserPrivilege": false,
            "source": "nvd@nist.gov",
            "type": "Primary",
            "userInteractionRequired": false
          }
        ],
        "cvssMetricV30": [
          {
            "cvssData": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.8,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.0"
            },
            "exploitabilityScore": 3.9,
            "impactScore": 5.9,
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      },
      "published": "2016-12-31T18:59:00.133",
      "references": [
        {
          "source": "cve@mitre.org",
          "url": "http://www.debian.org/security/2017/dsa-3753"
        },
        {
          "source": "cve@mitre.org",
          "url": "http://www.securityfocus.com/bid/95170"
        },
        {
          "source": "cve@mitre.org",
          "url": "https://github.com/LibVNC/libvncserver/pull/137"
        },
        {
          "source": "cve@mitre.org",
          "url": "https://github.com/LibVNC/libvncserver/releases/tag/LibVNCServer-0.9.11"
        },
        {
          "source": "cve@mitre.org",
          "url": "https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html"
        },
        {
          "source": "cve@mitre.org",
          "url": "https://security.gentoo.org/glsa/201702-24"
        },
        {
          "source": "cve@mitre.org",
          "url": "https://usn.ubuntu.com/4587-1/"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.debian.org/security/2017/dsa-3753"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.securityfocus.com/bid/95170"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://github.com/LibVNC/libvncserver/pull/137"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://github.com/LibVNC/libvncserver/releases/tag/LibVNCServer-0.9.11"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://security.gentoo.org/glsa/201702-24"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://usn.ubuntu.com/4587-1/"
        }
      ],
      "sourceIdentifier": "cve@mitre.org",
      "vulnStatus": "Modified",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-119"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:libvncserver_project:libvncserver:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "F09960B4-2704-4B36-B056-476F4DD30C9B",
                    "versionEndIncluding": "0.9.10",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Heap-based buffer overflow in rfbproto.c in LibVNCClient in LibVNCServer before 0.9.11 allows remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted FramebufferUpdate message containing a subrectangle outside of the client drawing area."
          },
          {
            "lang": "es",
            "value": "Desbordamiento de b\u00fafer basado en memoria din\u00e1mica en rfbproto.c en LibVNCClient en LibVNCServer en versiones anteriores a 0.9.11 permite a servidores remotos provocar una denegaci\u00f3n de servicio (ca\u00edda de aplicaci\u00f3n) o posiblemente ejecutar c\u00f3digo arbitrario a trav\u00e9s de un mensaje FramebufferUpdate manipulado que contiene un subrect\u00e1ngulo fuera del \u00e1rea de dibujo del cliente."
          }
        ],
        "id": "CVE-2016-9941",
        "lastModified": "2026-05-06T22:30:45.220",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "HIGH",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 7.5,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 10.0,
              "impactScore": 6.4,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV30": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 9.8,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.0"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2016-12-31T18:59:00.133",
        "references": [
          {
            "source": "cve@mitre.org",
            "url": "http://www.debian.org/security/2017/dsa-3753"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.securityfocus.com/bid/95170"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://github.com/LibVNC/libvncserver/pull/137"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://github.com/LibVNC/libvncserver/releases/tag/LibVNCServer-0.9.11"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://security.gentoo.org/glsa/201702-24"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://usn.ubuntu.com/4587-1/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.debian.org/security/2017/dsa-3753"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.securityfocus.com/bid/95170"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://github.com/LibVNC/libvncserver/pull/137"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://github.com/LibVNC/libvncserver/releases/tag/LibVNCServer-0.9.11"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://security.gentoo.org/glsa/201702-24"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://usn.ubuntu.com/4587-1/"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-119"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T11:56:33+00:00",
      "cve": "CVE-2016-9941",
      "id": "CVE-2016-9941",
      "initial_release_date": "2016-11-14T00:00:00+00:00",
      "product_status:known_affected": "6",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "libvncserver: Heap-based buffer overflow in rfbproto.c",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2016/cve-2016-9941.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-01T02:07:28Z",
      "cve": "CVE-2016-9941",
      "id": "CVE-2016-9941",
      "initial_release_date": "2023-02-15T04:54:40Z",
      "product_status:known_affected": "44",
      "product_status:known_not_affected": "6",
      "product_status:recommended": "70",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2016-9941",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2016-9941.json",
      "version": "15"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

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.

Loading…

Detection rules are retrieved from Rulezet.

Loading…

Loading…

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.


Loading…