CVE-2026-42542

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Source

https://cve.org/CVERecord?id=CVE-2026-42542

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42542.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-42542

Aliases

GHSA-vg95-j2hf-hvjx

Published

2026-06-10T20:32:38.985Z

Modified

2026-07-08T08:13:48.838592108Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator

Summary

TDengine has an integer underflow in uvConnMayGetUserInfo() allows unauthenticated remote crash (DoS)

Details

TDengine is an open source, time-series database optimized for Internet of Things devices. In versions 3.4.0.0 through 3.4.1.5, an unauthenticated remote attacker can crash the taosd server process by sending a single crafted RPC packet. No credentials or prior session state are required. Version 3.4.1.6 fixes the issue.

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42542.json",
    "cwe_ids": [
        "CWE-191"
    ],
    "cna_assigner": "GitHub_M"
}

References

Affected packages

Git / github.com/taosdata/tdengine

Affected ranges

Type

GIT

Repo

https://github.com/taosdata/tdengine

Events

Introduced

6e95fe58a4e69509bd36aacbbc052ab264526942

Fixed

003e8a5f102f6ee24ada79e087bdbbea1442ca88

Database specific

{
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE",
        "REFERENCES"
    ],
    "cpe": "cpe:2.3:a:tdengine:tdengine:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "3.4.0.0"
        },
        {
            "fixed": "3.4.1.6"
        }
    ]
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42542.json"