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CVE-2003-0550

15
FAUCET Score

CVE-2003-0550 describes a design flaw in the Spanning Tree Protocol (STP) implementation within Linux kernel versions 2.4.x, specifically affecting Red Hat Linux. This vulnerability allows an unauthenticated attacker to manipulate the network's bridge topology due to insufficient security controls within the protocol. With a CVSS score of 5.0, it is considered a medium severity issue, requiring low attack complexity but only impacting data integrity (P) without affecting confidentiality or availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
2.4.2CPE matchmatch criteria
cpe:2.3:o:redhat:linux:2.4.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.94%
Probability of exploitation in next 30 days
EPSS Percentile
78.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0194 is in the 66th percentile among its peer group of 23,705 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

Patch Available

Vendor Patches (10)

debianpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux AS (Advanced Server) version 2.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux ES version 2.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux WS version 2.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux 7.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux 7.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux 7.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux 8.0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux 9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux Advanced Workstation 2.1
View patch

Vendor Advisories (1)

redhatCVE-2003-0550Moderate

security flaw

Jun 30, 2003

References

oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A380
debian.org / security/2004/dsa-358
debian.org / security/2004/dsa-423
PatchVendor Advisory
redhat.com / support/errata/RHSA-2003-238.html
PatchVendor Advisory
redhat.com / support/errata/RHSA-2003-239.html