Buffer overflow in Iptime Nas
CVE-2025-50464
A buffer overflow vulnerability exists in the upload.cgi module of the iptime NAS firmware v1.5.04. The vulnerability arises due to the unsafe use of the strcpy function to copy attacker-controlled data from the CONTENT_TYPE HTTP header into a fixed-size stack buffer (v8, allocated 8 bytes) without bounds checking. Since this operation occurs before authentication logic is executed, the vulnerability is exploitable pre-authentication.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.005 (39.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Iptime Nas
- Iptime Nas Firmware — versions 1.5.04
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lafdrew.github.io/2025/04/25/Buffer-Overflow-in-upload-cgi-of-iptime-nas-1-5-04/ (Broken Link)
- github.com/lafdrew/IOT/blob/main/iptime_nas_1.5.04/Buffer-Overflow-in-upload-cg… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-50464?
- CVE-2025-50464 is a medium-severity vulnerability in Iptime Nas, classified under Stack-based Buffer Overflow. CVSS score: 6.5/10. Published 2025-07-30.
- How severe is CVE-2025-50464?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2025-50464 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.