High severity · published May 19, 2026
CVE-2026-27648
web_webview has an out-of-bounds write vulnerability
8.8
CVSS
0.6%
EPSS
No
On KEV
Description
in OpenHarmony v6.0 and prior versions allow a remote attacker arbitrary code execution in pre-installed apps.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
OpenHarmony · OpenHarmony
v5.0.3 through v6.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-27648
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-27648
gitcode.com
https://gitcode.com/openharmony/security/tree/master/zh/security-disclosure/2026/2026-04.md
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