CVE-2025-14021 Security feature bypass in LINE client for iOS
Attackers can spoof the address bar in the LINE iOS in-app browser to execute malicious JavaScript and conduct phishing attacks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-14021?
CVE-2025-14021 is a medium-severity vulnerability in Linecorp Line, published on 15 Dec 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The in-app browser in LINE client for iOS versions prior to 14.14 is vulnerable to address bar spoofing, which could allow attackers to execute malicious JavaScript within iframes while displaying trusted URLs, enabling phishing attacks through overlaid malicious content.
Weakness: CWE-451
Which versions are affected by CVE-2025-14021?
It affects 1 product.
Products include Linecorp Line.
How do I fix CVE-2025-14021?
No fix has been published for CVE-2025-14021 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-14021 being exploited?
There is no known exploitation of CVE-2025-14021 in the wild and no public exploit code.
Other vulnerabilities in Linecorp Line
Sources
Also known as GHSA-h66v-gcx5-5fhw.