Pre-authentication control-flow hijack via CONTENT_TYPE overflow
Published Jul 30, 2025 · Updated Jul 30, 2025
Stack buffer overflow in upload.cgi in ipTIME NAS firmware 1.5.04 allows remote attackers to control execution through a crafted HTTP header. The module passes the attacker-controlled CONTENT_TYPE value to strcpy, which writes it into an eight-byte stack buffer without bounds checking. Processing occurs before authentication, so no account or user interaction is required; the published proof of concept demonstrates control-flow corruption.
Summary
What happened
Stack buffer overflow in upload.cgi in ipTIME NAS firmware 1.5.04 allows remote attackers to control execution through a crafted HTTP header. The module passes the attacker-controlled CONTENT_TYPE value to strcpy, which writes it into an eight-byte stack buffer without bounds checking. Processing occurs before authentication, so no account or user interaction is required; the published proof of concept demonstrates control-flow corruption.
The record
- CVE
- CVE-2025-50464
- Published
- Jul 30, 2025
- Updated
- Jul 30, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-121, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 30, 2025CVE publishedPublication date reported by the CVE source.
- Jul 30, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- ipTIME NAS 1.5.04 upload.cgi buffer-overflow proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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