Vulnerability-Lookup

CVE-2026-4391 (GCVE-0-2026-4391)

Vulnerability from cvelistv5 – Published: 2026-05-27 16:45 – Updated: 2026-05-27 18:46

Title

TeamSpeak 3 Server ECC Key heap-based overflow

Summary

A security vulnerability has been detected in TeamSpeak 3 Server up to 3.13.7. This vulnerability affects unknown code of the component ECC Key Parser. Such manipulation leads to heap-based buffer overflow. The attack may be launched remotely. Upgrading to version 3.13.8 is able to resolve this issue. It is suggested to upgrade the affected component.

Severity

6.9 (Medium)


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

5.3 (Medium)


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

5.3 (Medium)


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

CWE

CWE-122 - Heap-based Buffer Overflow
CWE-119 - Memory Corruption

Assigner

VulDB

References

5 references

URL	Tags
https://vuldb.com/vuln/366315	vdb-entry
https://vuldb.com/vuln/366315/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

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                "id": "CVE-2026-4391",
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FKIE_CVE-2026-4391

Vulnerability from fkie_nvd - Published: 2026-05-27 18:16 - Updated: 2026-05-27 19:49

Severity

5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Summary

References

	URL	Tags
	cna@vuldb.com	https://files.teamspeak-services.com/docs/security/TS-SA-2026-001.html
	cna@vuldb.com	https://modzero.com/en/advisories/mz-26-01-teamspeak/
	cna@vuldb.com	https://vuldb.com/vuln/366315
	cna@vuldb.com	https://vuldb.com/vuln/366315/cti
	cna@vuldb.com	https://www.teamspeak.com/en/downloads/#server

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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    {
      "lang": "en",
      "value": "A security vulnerability has been detected in TeamSpeak 3 Server up to 3.13.7. This vulnerability affects unknown code of the component ECC Key Parser. Such manipulation leads to heap-based buffer overflow. The attack may be launched remotely. Upgrading to version 3.13.8 is able to resolve this issue. It is suggested to upgrade the affected component."
    }
  ],
  "id": "CVE-2026-4391",
  "lastModified": "2026-05-27T19:49:48.143",
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          "privilegesRequired": "NONE",
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          "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:N/VI:N/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",
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  "references": [
    {
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      "url": "https://files.teamspeak-services.com/docs/security/TS-SA-2026-001.html"
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    },
    {
      "source": "cna@vuldb.com",
      "url": "https://www.teamspeak.com/en/downloads/#server"
    }
  ],
  "sourceIdentifier": "cna@vuldb.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        },
        {
          "lang": "en",
          "value": "CWE-122"
        }
      ],
      "source": "cna@vuldb.com",
      "type": "Primary"
    }
  ]
}

GHSA-H574-9FVH-93J7

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

Details

Severity

5.3 (Medium)


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

6.9 (Medium)


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

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2026-4391"
  ],
  "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 security vulnerability has been detected in TeamSpeak 3 Server up to 3.13.7. This vulnerability affects unknown code of the component ECC Key Parser. Such manipulation leads to heap-based buffer overflow. The attack may be launched remotely. Upgrading to version 3.13.8 is able to resolve this issue. It is suggested to upgrade the affected component.",
  "id": "GHSA-h574-9fvh-93j7",
  "modified": "2026-05-27T18:31:42Z",
  "published": "2026-05-27T18:31:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4391"
    },
    {
      "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/366315"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/366315/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:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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"
    }
  ]
}

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

CVE-2026-4391 (GCVE-0-2026-4391)

FKIE_CVE-2026-4391

GHSA-H574-9FVH-93J7

Tags

Sightings

Nomenclature