CVE-2002-1747
Vtun 2.5b1 does not authenticate forwarded packets, which allows remote attackers to inject data...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2002-1747- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:N - Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2002-1747- Updated
- 2026-11-02
EUVDEUVD-2002-1726 No score
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.
- Record
EUVD-2002-1726- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-hf68-wq7f-gmhq No score
Vtun 2.5b1 does not authenticate forwarded packets, which allows remote attackers to inject data...
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.
- Record
GHSA-hf68-wq7f-gmhq- Updated
- 2026-11-02
OSV No score
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.
- Record
CVE-2002-1747- Updated
- 2026-11-02
OSVDEBIAN-CVE-2002-1747 No score
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.
- Record
DEBIAN-CVE-2002-1747- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
vtunDebian:12 |
before 2.5b2 | 2.5b2 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2002-1747 is a medium vulnerability (CVSS 5.0) in Maxim Krasnyansky Vtun, published December 31, 2002. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.07%, the 65th percentile. Fixed in vtun 2.5b2.