CVE-2002-1511

The vncserver wrapper for vnc before 3.3.3r2-21 uses the rand() function instead of srand(), which causes vncserver to generate weak cookies.

Published: 2003-03-03 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2002-1511 is rated Moderate Risk (48.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.35%). 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-2002-1511

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 2026-05-07 0.95% 1.35% +0.40%
2 2025-03-30 1.02% 0.95% -0.07%
3 2025-03-29 — 1.02% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2002-1511

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N 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:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2002-1511

OS Trackers for CVE-2002-1511

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2002-1511

Affected software / configurations for CVE-2002-1511

Vendor Product Version Raw CPE
att vnc 3.3.3 cpe:2.3:a:att:vnc:3.3.3:*:*:*:*:*:*:*
att vnc 3.3.3r2 cpe:2.3:a:att:vnc:3.3.3r2:*:*:*:*:*:*:*
att vnc 3.3.4 cpe:2.3:a:att:vnc:3.3.4:*:*:*:*:*:*:*
att vnc 3.3.5 cpe:2.3:a:att:vnc:3.3.5:*:*:*:*:*:*:*
att vnc 3.3.6 cpe:2.3:a:att:vnc:3.3.6:*:*:*:*:*:*:*
tightvnc tightvnc 1.2.0 cpe:2.3:a:tightvnc:tightvnc:1.2.0:*:*:*:*:*:*:*
tightvnc tightvnc 1.2.1 cpe:2.3:a:tightvnc:tightvnc:1.2.1:*:*:*:*:*:*:*
tightvnc tightvnc 1.2.2 cpe:2.3:a:tightvnc:tightvnc:1.2.2:*:*:*:*:*:*:*
tightvnc tightvnc 1.2.3 cpe:2.3:a:tightvnc:tightvnc:1.2.3:*:*:*:*:*:*:*
tightvnc tightvnc 1.2.4 cpe:2.3:a:tightvnc:tightvnc:1.2.4:*:*:*:*:*:*:*
tightvnc tightvnc 1.2.5 cpe:2.3:a:tightvnc:tightvnc:1.2.5:*:*:*:*:*:*:*

References for CVE-2002-1511

cvelogic Threat Intelligence