CVE-2002-2266

NetScreen ScreenOS 2.8 through 4.0, when forwarding H.323 or Netmeeting traffic, allows remote attackers to cause a denial of service (firewall session table consumption) by establishing multiple half-open H.323 sessions, which are not cleaned up on garbage removal and do not time out for 36 hours.

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-2002-2266 is rated Moderate Risk (44.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.38%). 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-2002-2266

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 2026-06-15 0.71% 1.38% +0.67%
2 2026-06-06 0.58% 0.71% +0.13%
3 2025-11-12 — 0.58% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2002-2266

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:N/I:N/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:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2002-2266

Affected software / configurations for CVE-2002-2266

Vendor Product Version Raw CPE
netscreen screenos 2.8 cpe:2.3:a:netscreen:screenos:2.8:*:*:*:*:*:*:*
netscreen screenos 3.0 cpe:2.3:a:netscreen:screenos:3.0:*:*:*:*:*:*:*
netscreen screenos 3.1 cpe:2.3:a:netscreen:screenos:3.1:*:*:*:*:*:*:*
netscreen screenos 4.0 cpe:2.3:a:netscreen:screenos:4.0:*:*:*:*:*:*:*

References for CVE-2002-2266

cvelogic Threat Intelligence