Tinyproxy through 1.11.2 contains an integer overflow vulnerability in the…
Priority LOW 35CWE-190Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
Tinyproxy through 1.11.2 contains an integer overflow vulnerability in the strip_return_port() function within src/reqs.c.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0028 20th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- 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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:tinyproxy_project:tinyproxy:*:*:*:*:*:*:*:* | up to 1.11.2 | Vulnerable | Tinyproxy Project |
- cpe:2.3:a:tinyproxy_project:tinyproxy:*:*:*:*:*:*:*:* Versions up to 1.11.2 Vulnerable ·Tinyproxy Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2025-63938
- 2026-10-03 Alias added: GHSA-w547-jc37-w3cr
References
More Tinyproxy Project Tinyproxy vulnerabilities
- TI-2023-27093 Use after free in Tinyproxy CVSS 3.1CRITICAL 9.8
- TI-2026-24395 Tinyproxy HTTP request parsing desynchronization via case-sensitive Transfer-Encoding handling CVSS 4.0HIGH 8.7
- TI-2022-19200 Potential leak of left-over heap data if custom error page templates containing special… CVSS 3.1HIGH 7.5
- TI-2017-08702 main.c in Tinyproxy 1.8.4 and earlier creates a /run/tinyproxy/tinyproxy.pid file after… CVSS 3.0MEDIUM 5.5
Sources
- CVE-2025-63938 · CVE Program
- CVE-2025-63938 · NVD
- FIRST EPSS
- GHSA-w547-jc37-w3cr · GitHub Advisory Database · CC BY 4.0
- CVE-2025-63938 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences