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CVE-2016-6246

14
FAUCET Score

CVE-2016-6246 is a denial-of-service vulnerability affecting OpenBSD versions 5.8 and 5.9. Local users with specific privileges can trigger a kernel panic by mounting a tmpfs with invalid characters in the username, groupname, or device name of the root node. This vulnerability has a CVSS score of 4.4 (Medium), indicating a local attack vector with low complexity, requiring high privileges to achieve a high impact on availability. There is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
5.8CPE matchmatch criteria
cpe:2.3:o:openbsd:openbsd:5.8:*:*:*:*:*:*:*
5.9CPE matchmatch criteria
cpe:2.3:o:openbsd:openbsd:5.9:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.4MEDIUM

CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
0.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.43%
Probability of exploitation in next 30 days
EPSS Percentile
35.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0043 is in the 85th percentile among its peer group of 3,720 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

openbsd.org / errata58.html
Release Notes
openbsd.org / errata59.html
Release Notes
openwall.com / lists/oss-security/2016/07/14/5
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/07/17/7
ExploitMailing ListThird Party Advisory
securityfocus.com / bid/91805