Vulnerability · Published Apr 13, 2026 · Assigned by huawei
CVE-2026-34866
Medium 5.1
In plain English
A medium-severity buffer overflow in HarmonyOS from Huawei. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 0% of all known vulnerabilities).
Severity (CVSS 3.1)5.1Medium
Exploit odds (30 days)<0.1%top 99.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Out-of-bounds write vulnerability in the WEB module.Impact: Successful exploitation of this vulnerability will affect availability and confidentiality.
Affected products (as reported)
Weakness: CWE-120 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L