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CVE-2002-1100

20
FAUCET Score

CVE-2002-1100 describes a denial-of-service vulnerability affecting Cisco VPN 3000 Concentrator 2.2.x and 3.x versions prior to 3.5.3. Remote attackers can crash the device by submitting an excessively long username or password to the HTML login interface. This vulnerability has a CVSS score of 5.0, indicating a medium severity with a network attack vector, low complexity, no authentication required, and a partial availability impact. While there is no known active exploitation, public exploit code, or KEV listing, the vulnerability has garnered significant community discussion with over 10 mentions.

Impacted Technologies

VendorProductVersion(s)CPE
2.0CPE matchmatch criteria
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:2.0:*:*:*:*:*:*:*
2.5.2.aCPE matchmatch criteria
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:2.5.2.a:*:*:*:*:*:*:*
2.5.2.bCPE matchmatch criteria
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:2.5.2.b:*:*:*:*:*:*:*
2.5.2.cCPE matchmatch criteria
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:2.5.2.c:*:*:*:*:*:*:*
2.5.2.dCPE matchmatch criteria
cpe:2.3:o:cisco:vpn_3000_concentrator_series_software:2.5.2.d:*:*:*:*:*:*:*

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
1.66%
Probability of exploitation in next 30 days
EPSS Percentile
74.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0166 is in the 59th percentile among its peer group of 23,684 CVEs.

Social Chatter

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

cisco.com / warp/public/707/vpn3k-multiple-vuln-pub.shtml
Vendor Advisory
iss.net / security_center/static/10025.php
Vendor Advisory
securityfocus.com / bid/5617