Vulnerability in SonicWall Soho

CVE-2001-1104

SonicWALL SOHO uses easily predictable TCP sequence numbers, which allows remote attackers to spoof or hijack sessions.

Published 2001-07-25 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 7.5 (High). Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.070 (93.9th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 93.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.070 · newest: 0.070 · change: 0.000

Affected products

SonicWall Soho
SonicWall Soho Firmware — versions 4.0.0, 5.0.0, 5.1.5.0

References

www.securityfocus.com/archive/1/199632 (Vendor Advisory, mailing-list, VDB Entry, Third Party Advisory)
www.securityfocus.com/bid/3098 (VDB Entry, Third Party Advisory, vdb-entry, Vendor Advisory)