PatchTheCVECVE-2026-34122: A stack-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 within a configuration
CVE-2026-34122 is a medium-severity flaw (CVSS 6.5) affecting tapo c520ws firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A stack-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 within a configuration handling component due to insufficient input validation. An attacker can exploit this vulnerability by supplying an excessively long value for a vulnerable configuration parameter, resulting in a stack overflow. Successful exploitation results in Denial-of-Service (DoS) condition, leading to a service crash or device reboot, impacting a
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.5 (Medium) |
| Attack vector | Adjacent network |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.3% (top 83%) |
| CISA exploited list | No |
| Weakness | CWE-121 |
| Published | 2026-04-02 |
| Last modified | 2026-07-24 |
Last updated 2026-07-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-34122?
tapo c520ws firmware: upgrade to 1.2.4. Exact commands for each OS are on this page.
Is CVE-2026-34122 being exploited?
CVE-2026-34122 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-34122 affect?
CVE-2026-34122 affects tapo c520ws firmware. Severity is medium (CVSS 6.5). A stack-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 within a configuration handling component due to insufficient input validation. An attacker can exploit this vulnerability by supplying an excessively l
How urgent is CVE-2026-34122?
Priority 27/100. No elevated risk signals yet.
Software pages
Related CVEs
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- CVE-2026-34119 MEDIUM 6.5 UPGRADE A heap-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 within the HTTP parsing