CVE-2025-15621 Sparx Enterprise Architect Client does not verify the receiver of OAuth2 credentials during OpenID authentication
Attackers can intercept OAuth2 credentials during OpenID authentication due to missing receiver verification, potentially leading to account takeover.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-15621?
CVE-2025-15621 is a medium-severity vulnerability in Sparx Enterprise Architect, published on 16 Apr 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Insufficiently Protected Credentials in Sparx Systems Pty Ltd. Sparx Enterprise Architect. Client does not verify the receiver of OAuth2 credentials during OpenID authentication
Weakness: CWE-522
Which versions are affected by CVE-2025-15621?
It affects 1 product.
Products include Sparxsystems Enterprise Architect.
How do I fix CVE-2025-15621?
No fix has been published for CVE-2025-15621 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-15621 being exploited?
There is no known exploitation of CVE-2025-15621 in the wild and no public exploit code.
Other vulnerabilities in Sparx Enterprise Architect
Sources
Also known as GHSA-g8rx-2jmm-3847.