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CVE-2003-0100

32
FAUCET Score

CVE-2003-0100 describes a buffer overflow vulnerability in Cisco IOS versions 11.2.x through 12.0.x. This flaw allows remote attackers to trigger a denial of service and potentially execute arbitrary commands by sending a large volume of OSPF neighbor announcements. With a CVSS score of 7.5, this vulnerability is considered highly severe due to its network-based attack vector, low attack complexity, and potential for complete compromise of confidentiality, integrity, and availability. While not listed on the KEV catalog or currently active on hot lists, public exploit code exists (EDB-22271), though there is no evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
11.1CPE matchmatch criteria
cpe:2.3:o:cisco:ios:11.1:*:*:*:*:*:*:*
11.1\(7\)aaCPE matchmatch criteria
cpe:2.3:o:cisco:ios:11.1\(7\)aa:*:*:*:*:*:*:*
11.1\(7\)caCPE matchmatch criteria
cpe:2.3:o:cisco:ios:11.1\(7\)ca:*:*:*:*:*:*:*
11.1\(9\)iaCPE matchmatch criteria
cpe:2.3:o:cisco:ios:11.1\(9\)ia:*:*:*:*:*:*:*
11.1\(13\)CPE matchmatch criteria
cpe:2.3:o:cisco:ios:11.1\(13\):*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
9.63%
Probability of exploitation in next 30 days
EPSS Percentile
95.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
ExploitDB: EDB-22271 · Feb 20, 2003
This CVE's current EPSS score of 0.0963 is in the 92nd percentile among its peer group of 51,455 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, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

marc.info
marc.info
iss.net / security_center/static/11373.php
Vendor Advisory
securityfocus.com / bid/6895