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CVE-2002-2140

19
FAUCET Score

CVE-2002-2140 describes a buffer overflow vulnerability in Cisco PIX Firewall versions 5.2.x through 6.2.1. This flaw allows remote attackers to trigger a denial of service by sending specially crafted HTTP traffic when the firewall is configured to use TACACS+ or RADIUS for authentication. The vulnerability has a CVSS score of 5.0, indicating a medium severity, and is easily exploitable over the network without authentication, leading to a potential loss of availability. There is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or KEV entry, though it has garnered significant community discussion with 10 mentions.

Impacted Technologies

VendorProductVersion(s)CPE
5.2CPE matchmatch criteria
cpe:2.3:o:cisco:pix_firewall_software:5.2:*:*:*:*:*:*:*
5.2\(1\)CPE matchmatch criteria
cpe:2.3:o:cisco:pix_firewall_software:5.2\(1\):*:*:*:*:*:*:*
5.2\(2\)CPE matchmatch criteria
cpe:2.3:o:cisco:pix_firewall_software:5.2\(2\):*:*:*:*:*:*:*
5.2\(3\)CPE matchmatch criteria
cpe:2.3:o:cisco:pix_firewall_software:5.2\(3\):*:*:*:*:*:*:*
5.2\(4\)CPE matchmatch criteria
cpe:2.3:o:cisco:pix_firewall_software:5.2\(4\):*:*:*:*:*:*:*

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
1.99%
Probability of exploitation in next 30 days
EPSS Percentile
78.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0199 is in the 67th percentile among its peer group of 23,690 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

ciac.org / ciac/bulletins/n-017.shtml
Patch
cisco.com / warp/public/707/pix-multiple-vuln-pub.shtml
Patch
iss.net / security_center/static/10661.php
Patch
securityfocus.com / bid/6212
Patch