Auth bypass in Xtooltech Xtool Anyscan
CVE-2025-63435
Xtooltech Xtool AnyScan Android Application 4.40.40 is Missing Authentication for Critical Function. The server-side endpoint responsible for serving update packages for the application does not require any authentication. This allows an unauthenticated remote attacker to freely download official update packages..
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (28.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.nowsecure.com/blog/2025/07/16/remote-code-execution-discovered-in-xtool-any… (Exploit, Third Party Advisory)
- github.com/ab3lson/cve-references/tree/master/CVE-2025-63435 (Third Party Advisory)
Frequently asked questions
- What is CVE-2025-63435?
- CVE-2025-63435 is a medium-severity vulnerability in Xtooltech Xtool Anyscan, classified under Missing Authentication for Critical Function. CVSS score: 4.3/10. Published 2025-11-24.
- How severe is CVE-2025-63435?
- Medium severity. CVSS v3 base score is 4.3 out of 10.