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CVE-2016-3067

31
FAUCET Score

CVE-2016-3067 is a critical privilege escalation vulnerability affecting Cygwin versions prior to 2.5.0, stemming from improper handling of permission updates when changing users. With a CVSS score of 9.8, it allows unauthenticated attackers to remotely gain full control over affected systems (Confidentiality, Integrity, and Availability impacts are High). Despite its severity, there is no public exploit code available, nor is there evidence of active exploitation or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.4.1-1CPE matchmatch criteria
cpe:2.3:a:cygwin:cygwin:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.04%
Probability of exploitation in next 30 days
EPSS Percentile
79.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0204 is in the 68th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cygwin.com / ml/cygwin/2016-02/msg00129.html
Mailing ListRelease NotesVendor Advisory
cygwin.com / ml/cygwin-announce/2016-02/msg00023.html
Mailing ListRelease NotesVendor Advisory
cygwin.com / ml/cygwin-announce/2016-04/msg00020.html
Mailing ListRelease NotesVendor Advisory
cygwin.com / ml/cygwin-announce/2016-04/msg00054.html
Mailing ListRelease NotesVendor Advisory
sourceware.org / git