CWE-239: Failure to Handle Incomplete Element

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The product does not properly handle when a particular element is not completely specified.

What the weakness is: CWE-239 at MITRE. All weaknesses

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Explain CWE-239: Failure to Handle Incomplete Element and how to prevent and detect it in code. Use https://cwe.mitre.org/data/definitions/239.html and https://cve.bz/cve/cwe/239?via=ask-ai-copy for recent CVEs with this weakness. Cite the sources.

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7.5CVE-2025-41724EPSS 0.5%2025-10-22
An unauthenticated remote attacker can crash the wscserver by sending incomplete SOAP requests. The wscserver process will not be restarted by a watchdog and a device reboot is necessary to make it work again.
4.3CVE-2024-29155EPSS 0.2%2024-10-16
On Microchip RN4870 devices, when more than one consecutive PairReqNoInputNoOutput request is received, the device becomes incapable of completing the pairing process. A third party can inject a second PairReqNoInputNoOutput request jus…
7.5CVE-2020-10280EPSS 1.2%2020-06-24
The Apache server on port 80 that host the web interface is vulnerable to a DoS by spamming incomplete HTTP headers, effectively blocking the access to the dashboard.