CVE-2026-34865

CRITICAL

HarmonyOS >=6.0.0 - Heap-based Buffer Overflow in WEB Module

Title source: llm
STIX 2.1

Description

Out-of-bounds write vulnerability in the WEB module.Impact: Successful exploitation of this vulnerability will affect availability and confidentiality.

References (1)

Core 1

Scores

CVSS v3 9.1
EPSS 0.0021
EPSS Percentile 11.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact total

Details

CWE
CWE-122
Status published
Products (2)
huawei/harmonyos 6.0.0
Huawei/HarmonyOS 6.0.0
Published Apr 13, 2026
Tracked Since Apr 13, 2026