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CVE-2005-4351

14
FAUCET Score

CVE-2005-4351 describes a vulnerability in the securelevels implementation of FreeBSD, OpenBSD, DragonFly, and Linux kernels up to specific versions. A local, authenticated root user can bypass immutable file settings by mounting a new filesystem that overlays the protected files while the system is operational. This vulnerability has a CVSS score of 4.3 (Medium) indicating low attack complexity and requiring local access and authentication, with potential impacts on confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.2CPE matchmatch criteria
cpe:2.3:o:dragonfly:dragonfly:*:*:*:*:*:*:*:*
<= 6.0CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:*:stable:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:7.0:current:*:*:*:*:*:*
<= 2.6.15CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
<= 3.8CPE matchmatch criteria
cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
LOCAL
Access Complexity
LOW
Authentication
SINGLE
Exploitability Score
3.1
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.43%
Probability of exploitation in next 30 days
EPSS Percentile
34.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0043 is in the 89th percentile among its peer group of 15,938 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, 0.0 Bluesky, 0.0 Mastodon, and 0.1 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

archives.neohapsis.com / archives/openbsd/2005-10/1523.html
lists.grok.org.uk / pipermail/full-disclosure/2006-January/041177.html
ExploitVendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/24037
redteam-pentesting.de / advisories/rt-sa-2005-015.txt
ExploitVendor Advisory
redteam-pentesting.de / advisories/rt-sa-2005-15.txt