CVE-2026-27648 web_webview has an out-of-bounds write vulnerability
A remote attacker can achieve arbitrary code execution in pre-installed apps via an out-of-bounds write in the web_webview component.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-27648?
CVE-2026-27648 is a high-severity memory corruption vulnerability in OpenHarmony, published on 19 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
in OpenHarmony v6.0 and prior versions allow a remote attacker arbitrary code execution in pre-installed apps.
Weakness: CWE-787
Which versions are affected by CVE-2026-27648?
How do I fix CVE-2026-27648?
No fix has been published for CVE-2026-27648 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-27648 being exploited?
There is no known exploitation of CVE-2026-27648 in the wild and no public exploit code.
Sources
Also known as GHSA-fpp4-pf9w-p6rr.