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CVE-2026-34124: A denial-of-service vulnerability was identified in TP-Link Tapo C520WS v2.6 within the HTTP request path pars

28
Routine
MEDIUM 6.5UPGRADE

CVE-2026-34124 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 denial-of-service vulnerability was identified in TP-Link Tapo C520WS v2.6 within the HTTP request path parsing logic. The implementation enforces length restrictions on the raw request path but does not account for path expansion performed during normalization. An attacker on the adjacent network may send a crafted HTTP request to cause buffer overflow and memory corruption, leading to system interruption or device reboot.

Why this priority

  • No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score6.5 (Medium)
Attack vectorAdjacent network
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance0.3% (top 78%)
CISA exploited listNo
WeaknessCWE-120
Published2026-04-02
Last modified2026-07-24
Publisher (CNA): TPLink · Vendor: tp-link

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Last updated 2026-07-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

tp-link tapo c520ws firmware UPGRADE
Affected: < 1.2.4
Fixed in: 1.2.4
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official source NVD · CVE Program · Report a problem with this page
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-2026-34124?

tapo c520ws firmware: upgrade to 1.2.4. Exact commands for each OS are on this page.

Is CVE-2026-34124 being exploited?

CVE-2026-34124 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-2026-34124 affect?

CVE-2026-34124 affects tapo c520ws firmware. Severity is medium (CVSS 6.5). A denial-of-service vulnerability was identified in TP-Link Tapo C520WS v2.6 within the HTTP request path parsing logic. The implementation enforces length restrictions on the raw request path but does not account for path expansion perform

How urgent is CVE-2026-34124?

Priority 28/100. No elevated risk signals yet.

Software pages

TP-Link vulnerabilities

Related CVEs

References

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