Vtun 2.5b1 does not authenticate forwarded packets, which allows remote attackers to…
Priority LOW 25Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Partial · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
Vtun 2.5b1 does not authenticate forwarded packets, which allows remote attackers to inject data into user sessions without detection, and possibly control the data contents via cut-and-paste attacks on ECB.
Why it matters now
EPSS 0.01069 65th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
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:maxim_krasnyansky:vtun:2.5b1:*:*:*:*:*:*:* | 2.5b1 | Vulnerable | Maxim Krasnyansky |
- cpe:2.3:a:maxim_krasnyansky:vtun:2.5b1:*:*:*:*:*:*:* Versions 2.5b1 Vulnerable ·Maxim Krasnyansky
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2002-1747
- 2026-10-03 Alias added: GHSA-hf68-wq7f-gmhq
References
More Maxim Krasnyansky Vtun vulnerabilities
- TI-2002-01665 Vtun 2.5b1 allows remote attackers to inject data into user sessions by sniffing and replaying packets. CVSS 2.0MEDIUM 5.0
Sources
- CVE-2002-1747 · CVE Program
- CVE-2002-1747 · NVD
- FIRST EPSS
- GHSA-hf68-wq7f-gmhq · GitHub Advisory Database · CC BY 4.0
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