CVE-2025-27567 Cross-site scripting in HGW-BL1500HM
An attacker can execute arbitrary scripts in the browser of users accessing the LAN-side configuration page of the HGW-BL1500HM home gateway.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-27567?
CVE-2025-27567 is a medium-severity cross-site scripting vulnerability in KDDI CORPORATION HGW-BL1500HM, published on 28 Mar 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Cross-site scripting vulnerability exists in the NickName registration screen of HGW-BL1500HM Ver 002.002.003 and earlier. If this vulnerability is exploited, an arbitrary script may be executed on the web browser of the user who is using the configuration page or functions accessible only from the LAN side of the product.
Weakness: CWE-79
Which versions are affected by CVE-2025-27567?
How do I fix CVE-2025-27567?
No fix has been published for CVE-2025-27567 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-27567 being exploited?
There is no known exploitation of CVE-2025-27567 in the wild and no public exploit code.
Sources
Also known as GHSA-523h-xj4w-6jhm.