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CVE-2003-1001

15
FAUCET Score

CVE-2003-1001 describes a buffer overflow vulnerability in the Cisco Firewall Services Module (FWSM) affecting Cisco Catalyst 6500 and 7600 series devices. This flaw allows unauthenticated remote attackers to trigger a denial of service, causing the device to crash and reload, by sending specially crafted HTTP authentication requests for TACACS+ or RADIUS. The vulnerability has a CVSS score of 5.0, indicating a medium severity, with low attack complexity and no confidentiality or integrity impact, only availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or KEV listing, and community discussion is minimal.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:h:cisco:catalyst_6500:*:*:*:*:*:*:*:*
2.2\(1a\)CPE matchmatch criteria
cpe:2.3:h:cisco:catalyst_6500_ws-svc-nam-1:2.2\(1a\):*:*:*:*:*:*:*
3.1\(1a\)CPE matchmatch criteria
cpe:2.3:h:cisco:catalyst_6500_ws-svc-nam-1:3.1\(1a\):*:*:*:*:*:*:*
2.2\(1a\)CPE matchmatch criteria
cpe:2.3:h:cisco:catalyst_6500_ws-svc-nam-2:2.2\(1a\):*:*:*:*:*:*:*
3.1\(1a\)CPE matchmatch criteria
cpe:2.3:h:cisco:catalyst_6500_ws-svc-nam-2:3.1\(1a\):*:*:*:*:*:*:*

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
1.38%
Probability of exploitation in next 30 days
EPSS Percentile
69.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0138 is in the 50th 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

cisco.com / warp/public/707/cisco-sa-20031215-fwsm.shtml
PatchVendor Advisory