CVE-2025-63721 Deserialization in n/a
Attackers with normal user privileges can achieve remote code execution and server takeover via unsafe deserialization in the Snakeyaml component.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-63721?
CVE-2025-63721 is a critical unsafe deserialization vulnerability in n/a, published on 8 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
HummerRisk thru v1.5.0 is using a vulnerable Snakeyaml component, allowing attackers with normal user privileges to hit the /rule/add API and thereby achieve RCE and take over the server.
Weakness: CWE-502
Which versions are affected by CVE-2025-63721?
It affects 1 product.
Products include Hummerrisk Hummerrisk.
How do I fix CVE-2025-63721?
No fix has been published for CVE-2025-63721 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2025-63721 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-63721 exists.
Other vulnerabilities in n/a
- CVE-2023-43449 Code injection in n/a
- CVE-2026-3064 HummerRisk Cloud Task Scheduler ResourceCreateService.java command injection
- CVE-2026-3065 HummerRisk Cloud Task Dry-run CloudTaskService.java CommandUtils.commonExecCmdWithResult command injection
- CVE-2026-3066 HummerRisk Cloud Compliance Scanning PlatformUtils.java fixedCommand command injection
- CVE-2026-3067 HummerRisk Archive Extraction CommandUtils.java extractZip path traversal
Sources
Also known as GHSA-9hqp-6jv3-9h7w.