CVE-2016-3067

critical

Description

Cygwin before 2.5.0 does not properly handle updating permissions when changing users, which allows attackers to gain privileges.

References

https://sourceware.org/git/?p=newlib-cygwin.git%3Ba=commit%3Bh=205862ed08649df8f50b926a2c58c963f571b044

https://cygwin.com/ml/cygwin/2016-02/msg00129.html

https://cygwin.com/ml/cygwin-announce/2016-04/msg00054.html

https://cygwin.com/ml/cygwin-announce/2016-04/msg00020.html

https://cygwin.com/ml/cygwin-announce/2016-02/msg00023.html

Details

Source: Mitre, NVD

Published: 2017-04-21

Updated: 2026-05-13

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

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

Severity: Critical

EPSS

EPSS: 0.0059