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CVE-2002-1103

15
FAUCET Score

CVE-2002-1103 describes a denial-of-service vulnerability affecting Cisco VPN 3000 Concentrator versions 2.2.x, 3.6(Rel), and earlier 3.x versions before 3.5.5. Remote attackers can exploit this flaw by sending malformed or excessively large ISAKMP packets to the device. With a CVSS score of 5.0, this vulnerability is of medium severity, requiring no authentication and having a low attack complexity, but only leading to partial availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

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
1.42%
Probability of exploitation in next 30 days
EPSS Percentile
70.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0142 is in the 52nd percentile among its peer group of 23,723 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

cisco.com / warp/public/707/vpn3k-multiple-vuln-pub.shtml
Vendor Advisory
kb.cert.org / vuls/id/761651
PatchThird Party AdvisoryUS Government Resource