CVE-2002-1979

WatchGuard SOHO products running firmware 5.1.6 and earlier, and Vclass/RSSA using 3.2 SP1 and earlier, allows remote attackers to bypass firewall rules by sending a PASV command string as the argument of another command to an FTP server, which generates a response that contains the string, causing IPFilter to treat the response as if it were a legitimate PASV command from the server.

Published: 2002-12-31 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2002-1979 is rated Moderate Risk (45.4/100): CVSS High severity, with low exploitation likelihood (EPSS 0.22%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2002-1979

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-08-15 0.50% 0.22% -0.28%
2 2025-03-30 0.41% 0.50% +0.09%
3 2025-03-29 — 0.41% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2002-1979

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2002-1979

Affected software / configurations for CVE-2002-1979

Vendor Product Version Raw CPE
watchguard legacy_rssa <= 3.2_sp1 cpe:2.3:h:watchguard:legacy_rssa:*:*:*:*:*:*:*:*
watchguard soho <= 5.1.6 cpe:2.3:h:watchguard:soho:*:*:*:*:*:*:*:*
watchguard vclass <= 3.2_sp1 cpe:2.3:h:watchguard:vclass:*:*:*:*:*:*:*:*

References for CVE-2002-1979

cvelogic Threat Intelligence