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CVE-2002-1101

28
FAUCET Score

CVE-2002-1101 describes a denial-of-service vulnerability affecting Cisco VPN 3000 Concentrator 2.2.x, 3.6(Rel), and 3.x before 3.5.5, as well as the 3002 Hardware Client. An unauthenticated remote attacker can trigger this by submitting an excessively long username. With a CVSS score of 5.0 (AV:N/AC:L/Au:N/C:N/I:N/A:P), this vulnerability is easily exploitable over the network with low complexity and requires no authentication, leading to a partial denial of service. While not listed on the KEV catalog and with no Metasploit or Nuclei modules, an exploit is publicly available on ExploitDB, and it has garnered significant community discussion, indicating awareness and potential for exploitation.

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
3.38%
Probability of exploitation in next 30 days
EPSS Percentile
87.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
ExploitDB: EDB-21770 · Sep 3, 2002
This CVE's current EPSS score of 0.0338 is in the 83rd 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