What is CVE-2002-1697?

CVE-2002-1697 is a high-severity vulnerability in Vtun Project, classified under Inadequate Encryption Strength. CVSS score: 7.5/10. Published 2002-12-31.

How severe is CVE-2002-1697?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Vtun Project

CVE-2002-1697

Electronic Code Book (ECB) mode in VTun 2.0 through 2.5 uses a weak encryption algorithm that produces the same ciphertext from the same plaintext blocks, which could allow remote attackers to gain sensitive information.

Published 2002-12-31 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.008 (56.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Vtun Project

Weakness classification (CWE)

CWE-326 — Inadequate Encryption Strength

References

seclists.org/bugtraq/2002/Jan/0119.html (mailing-list, Mailing List, Third Party Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/7904 (VDB Entry, Third Party Advisory, vdb-entry)
www.securityfocus.com/bid/3845 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)

Frequently asked questions

What is CVE-2002-1697?: CVE-2002-1697 is a high-severity vulnerability in Vtun Project, classified under Inadequate Encryption Strength. CVSS score: 7.5/10. Published 2002-12-31.
How severe is CVE-2002-1697?: High severity. CVSS v3 base score is 7.5 out of 10.