PatchTheCVECVE-2026-34120: A heap-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 within the asynchronous
CVE-2026-34120 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 heap-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 within the asynchronous parsing of local video stream content due to insufficient alignment and validation of buffer boundaries when processing streaming inputs.An attacker on the same network segment could trigger heap memory corruption conditions by sending crafted payloads that cause write operations beyond allocated buffer boundaries. Successful exploitatio
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 | 0.2% (top 87%) |
| CISA exploited list | No |
| Weakness | CWE-122 |
| 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-2026-34120?
tapo c520ws firmware: upgrade to 1.2.4. Exact commands for each OS are on this page.
Is CVE-2026-34120 being exploited?
CVE-2026-34120 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-2026-34120 affect?
CVE-2026-34120 affects tapo c520ws firmware. Severity is medium (CVSS 6.5). A heap-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 within the asynchronous parsing of local video stream content due to insufficient alignment and validation of buffer boundaries when processing streaming
How urgent is CVE-2026-34120?
Priority 26/100. No elevated risk signals yet.
Software pages
Related CVEs
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