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CVE-2002-0891

15
FAUCET Score

CVE-2002-0891 describes a denial-of-service vulnerability in the web interface (WebUI) of NetScreen ScreenOS versions prior to 2.6.1r8, and specific 2.8.x and 3.0.x versions before 3.0.3r1. Remote attackers can exploit this by submitting an excessively long username, causing the device to crash. The vulnerability has a CVSS score of 5.0, indicating a medium severity, with low attack complexity and no authentication required, leading to a partial availability impact. There is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB, and it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2.5CPE matchmatch criteria
cpe:2.3:o:juniper:netscreen_screenos:2.5:*:*:*:*:*:*:*
2.5r1CPE matchmatch criteria
cpe:2.3:o:juniper:netscreen_screenos:2.5r1:*:*:*:*:*:*:*
2.5r2CPE matchmatch criteria
cpe:2.3:o:juniper:netscreen_screenos:2.5r2:*:*:*:*:*:*:*
2.5r6CPE matchmatch criteria
cpe:2.3:o:juniper:netscreen_screenos:2.5r6:*:*:*:*:*:*:*
2.6.1CPE matchmatch criteria
cpe:2.3:o:juniper:netscreen_screenos:2.6.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.63%
Probability of exploitation in next 30 days
EPSS Percentile
73.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0163 is in the 58th percentile among its peer group of 23,684 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

online.securityfocus.com / archive/1/274240
iss.net / security_center/static/9186.php
Vendor Advisory
netscreen.com / support/ns25_reboot.html
securityfocus.com / bid/4842
Vendor Advisory