CVE-2026-42542: CWE-191: Integer Underflow (Wrap or Wraparound) in taosdata TDengine
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.
AI Analysis
Technical Summary
An integer underflow (CWE-191) vulnerability exists in TDengine, an open source time-series database optimized for IoT devices. Specifically, in versions 3.4.0.0 through 3.4.1.5, an unauthenticated remote attacker can cause the taosd server process to crash by sending a specially crafted RPC packet. This results in a denial-of-service condition without requiring any authentication or prior session. The vulnerability is addressed in version 3.4.1.6.
Potential Impact
The vulnerability allows unauthenticated remote attackers to cause a denial-of-service by crashing the taosd server process. There is no impact on confidentiality or integrity reported. Availability is impacted due to the server crash.
Mitigation Recommendations
Upgrade TDengine to version 3.4.1.6 or later, which fixes this integer underflow vulnerability. Patch status is confirmed by the version-based fix information. No other mitigations are specified.
CVE-2026-42542: CWE-191: Integer Underflow (Wrap or Wraparound) in taosdata TDengine
Description
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.
CVSS v3.1
Score 7.5high
Affected software
pkg:github/taosdata/TDengineRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
An integer underflow (CWE-191) vulnerability exists in TDengine, an open source time-series database optimized for IoT devices. Specifically, in versions 3.4.0.0 through 3.4.1.5, an unauthenticated remote attacker can cause the taosd server process to crash by sending a specially crafted RPC packet. This results in a denial-of-service condition without requiring any authentication or prior session. The vulnerability is addressed in version 3.4.1.6.
Potential Impact
The vulnerability allows unauthenticated remote attackers to cause a denial-of-service by crashing the taosd server process. There is no impact on confidentiality or integrity reported. Availability is impacted due to the server crash.
Mitigation Recommendations
Upgrade TDengine to version 3.4.1.6 or later, which fixes this integer underflow vulnerability. Patch status is confirmed by the version-based fix information. No other mitigations are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-28T16:56:50.190Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a29d0220e53e738839869b4
Added to database: 6/10/2026, 8:59:14 PM
Last enriched: 6/10/2026, 9:14:23 PM
Last updated: 6/11/2026, 12:32:25 AM
Views: 7
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