The product receives input from an upstream component, but it does not handle or incorrectly handles when an expected special element is missing.
Volume of CVEs assigned to CWE-166 and their average CVSS base score over time.
Top CVEs that have been assigned this CWE. A single CVE can have multiple CWE assignments, though many have just one.
4 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2026-34582CRITICAL Botan is a C++ cryptography library. Prior to version 3.11.1, the TLS 1.3 implementation allowed ApplicationData records to be processed prior to the Finished message being receive | Apr 7, 2026 | 9.1 | 31 | NO | NO |
CVE-2026-21218HIGH Improper handling of missing special element in .NET allows an unauthorized attacker to perform spoofing over a network. | Feb 10, 2026 | 7.5 | 27 | NO | NO |
CVE-2026-32792MEDIUM NLnet Labs Unbound 1.6.2 up to and including version 1.25.0 has a denial of service vulnerability when compiled with DNSCrypt support ('--enable-dnscrypt'). A bad DNSCrypt query co | May 20, 2026 | 5.3 | 24 | NO | NO |
CVE-2024-38091HIGH Microsoft WS-Discovery Denial of Service Vulnerability | Jul 9, 2024 | 7.5 | 21 | NO | NO |
Exploit activity across CVEs assigned to this CWE, including CVEs that carry other CWE assignments.
Social posts that mention CVE IDs assigned to this CWE. This is assigned-CVE activity, not mentions of the CWE label itself.
Media articles that mention CVE IDs assigned to this CWE. This is assigned-CVE coverage, not mentions of the CWE label itself.