qinguoyi TinyWebServer http_conn.cpp stack-based overflow
Priority HIGH 70CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
A vulnerability, which was classified as critical, has been found in qinguoyi TinyWebServer up to 1.0. Affected by this issue is some unknown functionality of the file /http/http_conn.cpp. The manipulation of the argument name/password leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00819 57th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-3266
- 2026-10-03 Alias added: GHSA-8cmp-jx7c-f587
References
More qinguoyi Tinywebserver vulnerabilities
- TI-2025-02864 qinguoyi TinyWebServer http_conn.cpp improper authentication CVSS 4.0MEDIUM 6.9
- TI-2025-02863 qinguoyi TinyWebServer http_conn.cpp sql injection CVSS 4.0MEDIUM 5.3
Sources
- CVE-2025-3266 · CVE Program
- CVE-2025-3266 · NVD
- FIRST EPSS
- GHSA-8cmp-jx7c-f587 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences