CVE-2026-15314

This CVE is a buffer overflow in the Tapo P110's authenticated HTTP request handler. That detail matters more than the CVSS 7.5 DoS rating suggests. The vulnerability lives in the code path that processes requests after authentication succeeds — meaning the flaw isn't about WHO can trigger it, but about the unsafe memory operation itself. Authentication was added as a security layer on top of code that performs unbounded memory copies without validating length. This is the pattern to watch: auth and memory safety treated as separate problems rather than interconnected requirements. For defenders: assume this device has similar issues in unauthenticated paths. The commit history pattern here — auth bolted onto legacy unsafe code — typically means the original developer moved to another product SKU and the HTTP parser hasn't been revisited since. Check firmware versions still in support for your TP-Link and Tapo devices; if this flaw exists in one request handler in this firmware lineage, it's structurally likely to exist in others. The absence of address sanitizers in embedded toolchains means these bugs persist undetected through development and only surface under fuzzing or active exploitation. The remediation reality is stark: Tapo P110 v1 is likely end-of-life. Even if a patch materializes, consumer IoT patch penetration rates are brutal. You're not managing a CVE-to-fix window — you're managing permanent exposure on a device class that will never receive updates. For detection: monitor for anomalous process crashes in the device's network service, particularly around request handling. If you have Tapo P110 devices on your network, treat the network service as compromised-adjacent; segment accordingly. The EPSS score of 0.00499 reflects current attacker attention, not structural durability — the flaw will persist in the codebase until the development discipline changes, regardless of whether anyone is actively exploiting it today.

Reviewed through automated stages and approved by a human before publication.