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CVE-2026-34118

Heap-based Buffer Overflow Vulnerability Leading to Denial-of-Service in TP-Link Tapo C100, C101, C210 & C520WS PUBLISHED

Description (CNA)

A heap-based buffer overflow vulnerability was identified in TP-Link Tapo C100/C101 v5, C210 v3.6 and C520WS v2.6 in the HTTP POST body parsing logic due to missing validation of remaining buffer capacity after dynamic allocation, due to insufficient boundary validation when handling externally supplied HTTP input.   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 exploitation causes a Denial-of-Service (DoS) condition, causing the device’s process to crash or become unresponsive.

Affected (CNA)

Vendor / productVersions
TP-Link Systems Inc. / Tapo C520WS v2.6affected 0 before 1.2.4 Build 260326 Rel.24666n
TP Link Systems Inc. / Tapo C100 v5affected 0 before 1.5.4 Build 260528 Rel.11462n
TP Link Systems Inc. / Tapo C101 v5affected 0 before 1.5.4 Build 260528 Rel.11462n
TP Link Systems Inc. / Tapo C210 v3affected 0 before V3.6_1.2.7 Build 260818

CWE

CWE-122

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.