Vulnerability-Lookup

GHSA-CR8M-87QJ-3732

Vulnerability from github – Published: 2026-05-27 18:31 – Updated: 2026-05-27 18:31

Details

A weakness has been identified in TeamSpeak 3 Server up to 3.13.7. This affects the function process_resend_queue of the component Connection State Management. This manipulation causes use after free. The attack may be initiated remotely. Upgrading to version 3.13.8 is able to mitigate this issue. The affected component should be upgraded.

Severity

5.4 (Medium)


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

5.3 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-4390"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-27T18:16:28Z",
    "severity": "MODERATE"
  },
  "details": "A weakness has been identified in TeamSpeak 3 Server up to 3.13.7. This affects the function process_resend_queue of the component Connection State Management. This manipulation causes use after free. The attack may be initiated remotely. Upgrading to version 3.13.8 is able to mitigate this issue. The affected component should be upgraded.",
  "id": "GHSA-cr8m-87qj-3732",
  "modified": "2026-05-27T18:31:42Z",
  "published": "2026-05-27T18:31:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4390"
    },
    {
      "type": "WEB",
      "url": "https://files.teamspeak-services.com/docs/security/TS-SA-2026-001.html"
    },
    {
      "type": "WEB",
      "url": "https://modzero.com/en/advisories/mz-26-01-teamspeak"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/366314"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/366314/cti"
    },
    {
      "type": "WEB",
      "url": "https://www.teamspeak.com/en/downloads/#server"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/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"
    }
  ]
}

CVE-2026-4390 (GCVE-0-2026-4390)

Vulnerability from cvelistv5 – Published: 2026-05-27 16:30 – Updated: 2026-05-27 17:58

Title

TeamSpeak 3 Server Connection State Management process_resend_queue use after free

Summary

Severity

5.3 (Medium)


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

5.4 (Medium)


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

5.4 (Medium)


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

CWE

CWE-416 - Use After Free
CWE-119 - Memory Corruption

Assigner

VulDB

References

5 references

URL	Tags
https://vuldb.com/vuln/366314	vdb-entrytechnical-description
https://vuldb.com/vuln/366314/cti	signaturepermissions-required
https://modzero.com/en/advisories/mz-26-01-teamspeak/	related
https://files.teamspeak-services.com/docs/securit…	related
https://www.teamspeak.com/en/downloads/#server	patch

Impacted products

1 product

Vendor	Product	Version
n/a	TeamSpeak 3 Server	Affected: 3.13.0 Affected: 3.13.1 Affected: 3.13.2 Affected: 3.13.3 Affected: 3.13.4 Affected: 3.13.5 Affected: 3.13.6 Affected: 3.13.7 Unaffected: 3.13.8 cpe:2.3:a:teamspeak_3_server:teamspeak_3_server::::::::

Credits

Michael Imfeld (modzero)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-4390",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-27T17:58:20.001608Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-27T17:58:41.828Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:teamspeak_3_server:teamspeak_3_server:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Connection State Management"
          ],
          "product": "TeamSpeak 3 Server",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "3.13.0"
            },
            {
              "status": "affected",
              "version": "3.13.1"
            },
            {
              "status": "affected",
              "version": "3.13.2"
            },
            {
              "status": "affected",
              "version": "3.13.3"
            },
            {
              "status": "affected",
              "version": "3.13.4"
            },
            {
              "status": "affected",
              "version": "3.13.5"
            },
            {
              "status": "affected",
              "version": "3.13.6"
            },
            {
              "status": "affected",
              "version": "3.13.7"
            },
            {
              "status": "unaffected",
              "version": "3.13.8"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Michael Imfeld (modzero)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A weakness has been identified in TeamSpeak 3 Server up to 3.13.7. This affects the function process_resend_queue of the component Connection State Management. This manipulation causes use after free. The attack may be initiated remotely. Upgrading to version 3.13.8 is able to mitigate this issue. The affected component should be upgraded."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 5.5,
            "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:P/E:ND/RL:OF/RC:C",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-416",
              "description": "Use After Free",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-119",
              "description": "Memory Corruption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T16:30:08.778Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-366314 | TeamSpeak 3 Server Connection State Management process_resend_queue use after free",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/366314"
        },
        {
          "name": "VDB-366314 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/366314/cti"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://modzero.com/en/advisories/mz-26-01-teamspeak/"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://files.teamspeak-services.com/docs/security/TS-SA-2026-001.html"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://www.teamspeak.com/en/downloads/#server"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-05-27T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-05-27T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-05-27T18:27:20.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "TeamSpeak 3 Server Connection State Management process_resend_queue use after free"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-4390",
    "datePublished": "2026-05-27T16:30:08.778Z",
    "dateReserved": "2026-03-18T15:05:50.926Z",
    "dateUpdated": "2026-05-27T17:58:41.828Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

GHSA-CR8M-87QJ-3732

CVE-2026-4390 (GCVE-0-2026-4390)

Tags

Sightings

Nomenclature