CVE-2026-1991 (GCVE-0-2026-1991)

Vulnerability from cvelistv5 – Published: 2026-02-06 05:32 – Updated: 2026-02-23 09:21
VLAI
Title
libuvc UVC Descriptor device.c uvc_scan_streaming null pointer dereference
Summary
A vulnerability was detected in libuvc up to 0.0.7. Affected is the function uvc_scan_streaming of the file src/device.c of the component UVC Descriptor Handler. The manipulation results in null pointer dereference. The attack needs to be approached locally. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Severity
4.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
3.3 (Low)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a libuvc Affected: 0.0.1
Affected: 0.0.2
Affected: 0.0.3
Affected: 0.0.4
Affected: 0.0.5
Affected: 0.0.6
Affected: 0.0.7
Credits
Oneafter (VulDB User)
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-1991",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-06T20:24:58.826447Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-02-06T20:25:08.368Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "modules": [
            "UVC Descriptor Handler"
          ],
          "product": "libuvc",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "0.0.1"
            },
            {
              "status": "affected",
              "version": "0.0.2"
            },
            {
              "status": "affected",
              "version": "0.0.3"
            },
            {
              "status": "affected",
              "version": "0.0.4"
            },
            {
              "status": "affected",
              "version": "0.0.5"
            },
            {
              "status": "affected",
              "version": "0.0.6"
            },
            {
              "status": "affected",
              "version": "0.0.7"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Oneafter (VulDB User)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability was detected in libuvc up to 0.0.7. Affected is the function uvc_scan_streaming of the file src/device.c of the component UVC Descriptor Handler. The manipulation results in null pointer dereference. The attack needs to be approached locally. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 1.7,
            "vectorString": "AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-476",
              "description": "NULL Pointer Dereference",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-404",
              "description": "Denial of Service",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-23T09:21:46.700Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-344509 | libuvc UVC Descriptor device.c uvc_scan_streaming null pointer dereference",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/?id.344509"
        },
        {
          "name": "VDB-344509 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/?ctiid.344509"
        },
        {
          "name": "Submit #743388 | libuvc v0.0.7 and master-branch NULL Pointer Dereference",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/?submit.743388"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/libuvc/libuvc/issues/300"
        },
        {
          "tags": [
            "exploit"
          ],
          "url": "https://github.com/oneafter/0104/blob/main/repro"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/libuvc/libuvc/"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-02-05T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-02-05T01:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-02-07T13:18:57.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "libuvc UVC Descriptor device.c uvc_scan_streaming null pointer dereference"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-1991",
    "datePublished": "2026-02-06T05:32:08.140Z",
    "dateReserved": "2026-02-05T15:43:47.726Z",
    "dateUpdated": "2026-02-23T09:21:46.700Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-1991",
      "date": "2026-05-26",
      "epss": "0.0003",
      "percentile": "0.08861"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-1991\",\"sourceIdentifier\":\"cna@vuldb.com\",\"published\":\"2026-02-06T06:15:50.240\",\"lastModified\":\"2026-04-29T01:00:01.613\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability was detected in libuvc up to 0.0.7. Affected is the function uvc_scan_streaming of the file src/device.c of the component UVC Descriptor Handler. The manipulation results in null pointer dereference. The attack needs to be approached locally. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.\"},{\"lang\":\"es\",\"value\":\"Se detect\u00f3 una vulnerabilidad en libuvc hasta la versi\u00f3n 0.0.7. La funci\u00f3n uvc_scan_streaming del archivo src/device.c del componente UVC Descriptor Handler est\u00e1 afectada. La manipulaci\u00f3n resulta en una desreferencia de puntero nulo. El ataque debe abordarse localmente. El exploit ahora es p\u00fablico y puede ser utilizado. El proyecto fue informado del problema con antelaci\u00f3n a trav\u00e9s de un informe de incidencias, pero a\u00fan no ha respondido.\"}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/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\",\"baseScore\":1.9,\"baseSeverity\":\"LOW\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"NONE\",\"vulnIntegrityImpact\":\"NONE\",\"vulnAvailabilityImpact\":\"LOW\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"PROOF_OF_CONCEPT\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}],\"cvssMetricV31\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L\",\"baseScore\":3.3,\"baseSeverity\":\"LOW\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":1.8,\"impactScore\":1.4},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:L/AC:L/Au:S/C:N/I:N/A:P\",\"baseScore\":1.7,\"accessVector\":\"LOCAL\",\"accessComplexity\":\"LOW\",\"authentication\":\"SINGLE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"LOW\",\"exploitabilityScore\":3.1,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-404\"},{\"lang\":\"en\",\"value\":\"CWE-476\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:libuvc:libuvc:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"0.0.7\",\"matchCriteriaId\":\"44A9C66B-DC71-4CFD-A387-BB990D0EBE89\"}]}]}],\"references\":[{\"url\":\"https://github.com/libuvc/libuvc/\",\"source\":\"cna@vuldb.com\",\"tags\":[\"Product\"]},{\"url\":\"https://github.com/libuvc/libuvc/issues/300\",\"source\":\"cna@vuldb.com\",\"tags\":[\"Exploit\",\"Vendor Advisory\"]},{\"url\":\"https://github.com/oneafter/0104/blob/main/repro\",\"source\":\"cna@vuldb.com\",\"tags\":[\"Product\"]},{\"url\":\"https://vuldb.com/?ctiid.344509\",\"source\":\"cna@vuldb.com\",\"tags\":[\"Permissions Required\",\"VDB Entry\"]},{\"url\":\"https://vuldb.com/?id.344509\",\"source\":\"cna@vuldb.com\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"https://vuldb.com/?submit.743388\",\"source\":\"cna@vuldb.com\",\"tags\":[\"Exploit\",\"Third Party Advisory\",\"VDB Entry\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-1991\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-02-06T20:24:58.826447Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-02-06T20:25:04.952Z\"}}], \"cna\": {\"title\": \"libuvc UVC Descriptor device.c uvc_scan_streaming null pointer dereference\", \"credits\": [{\"lang\": \"en\", \"type\": \"reporter\", \"value\": \"Oneafter (VulDB User)\"}], \"metrics\": [{\"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 4.8, \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P\"}}, {\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 3.3, \"baseSeverity\": \"LOW\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R\"}}, {\"cvssV3_0\": {\"version\": \"3.0\", \"baseScore\": 3.3, \"baseSeverity\": \"LOW\", \"vectorString\": \"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R\"}}, {\"cvssV2_0\": {\"version\": \"2.0\", \"baseScore\": 1.7, \"vectorString\": \"AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR\"}}], \"affected\": [{\"vendor\": \"n/a\", \"modules\": [\"UVC Descriptor Handler\"], \"product\": \"libuvc\", \"versions\": [{\"status\": \"affected\", \"version\": \"0.0.1\"}, {\"status\": \"affected\", \"version\": \"0.0.2\"}, {\"status\": \"affected\", \"version\": \"0.0.3\"}, {\"status\": \"affected\", \"version\": \"0.0.4\"}, {\"status\": \"affected\", \"version\": \"0.0.5\"}, {\"status\": \"affected\", \"version\": \"0.0.6\"}, {\"status\": \"affected\", \"version\": \"0.0.7\"}]}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-02-05T00:00:00.000Z\", \"value\": \"Advisory disclosed\"}, {\"lang\": \"en\", \"time\": \"2026-02-05T01:00:00.000Z\", \"value\": \"VulDB entry created\"}, {\"lang\": \"en\", \"time\": \"2026-02-07T13:18:57.000Z\", \"value\": \"VulDB entry last update\"}], \"references\": [{\"url\": \"https://vuldb.com/?id.344509\", \"name\": \"VDB-344509 | libuvc UVC Descriptor device.c uvc_scan_streaming null pointer dereference\", \"tags\": [\"vdb-entry\", \"technical-description\"]}, {\"url\": \"https://vuldb.com/?ctiid.344509\", \"name\": \"VDB-344509 | CTI Indicators (IOB, IOC, IOA)\", \"tags\": [\"signature\", \"permissions-required\"]}, {\"url\": \"https://vuldb.com/?submit.743388\", \"name\": \"Submit #743388 | libuvc v0.0.7 and master-branch NULL Pointer Dereference\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://github.com/libuvc/libuvc/issues/300\", \"tags\": [\"issue-tracking\"]}, {\"url\": \"https://github.com/oneafter/0104/blob/main/repro\", \"tags\": [\"exploit\"]}, {\"url\": \"https://github.com/libuvc/libuvc/\", \"tags\": [\"product\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A vulnerability was detected in libuvc up to 0.0.7. Affected is the function uvc_scan_streaming of the file src/device.c of the component UVC Descriptor Handler. The manipulation results in null pointer dereference. The attack needs to be approached locally. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-476\", \"description\": \"NULL Pointer Dereference\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-404\", \"description\": \"Denial of Service\"}]}], \"providerMetadata\": {\"orgId\": \"1af790b2-7ee1-4545-860a-a788eba489b5\", \"shortName\": \"VulDB\", \"dateUpdated\": \"2026-02-23T09:21:46.700Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-1991\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-02-23T09:21:46.700Z\", \"dateReserved\": \"2026-02-05T15:43:47.726Z\", \"assignerOrgId\": \"1af790b2-7ee1-4545-860a-a788eba489b5\", \"datePublished\": \"2026-02-06T05:32:08.140Z\", \"assignerShortName\": \"VulDB\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




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.



Detection rules are retrieved from Rulezet.