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CVE-2005-0403

18
FAUCET Score

CVE-2005-0403 describes a denial-of-service vulnerability in Red Hat Enterprise Linux 3, specifically within the NPTL backport's tty_io.c, where the init_dev function fails to properly clear controlling TTYs in multi-threaded applications. This flaw allows local users to crash the system and potentially gain TTY access by triggering an access to a freed structure. With a CVSS score of 7.2, it is considered highly severe due to its local attack vector, low complexity, and complete impact on confidentiality, integrity, and availability. There is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
3.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:3.0:*:advanced_servers:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:3.0:*:enterprise_server:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:3.0:*:workstation:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:3.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.2HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
32.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 45th percentile among its peer group of 3,241 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 0.5 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

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: kernel-0:2.4.21-27.0.4.EL
View patch

Vendor Advisories (1)

redhatCVE-2005-0403Important

security flaw

Mar 8, 2005

References

bugzilla.redhat.com / bugzilla/show_bug.cgi
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9435
redhat.com / support/errata/RHSA-2005-293.html
PatchVendor Advisory