CVE-2023-28339

OpenDoas through 6.8.2, when TIOCSTI is available, allows privilege escalation because of sharing...

8.8 High

OpenDoas through 6.8.2, when TIOCSTI is available, allows privilege escalation because of sharing a terminal with the original session. NOTE: TIOCSTI is unavailable in OpenBSD 6.0 and later, and can be made unavailable in the Linux kernel 6.2 and later.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.64%Up 0.6 points since Mar 15, 2023

What each source reports

NVD Score used 8.8

Record: CVE-2023-28339
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-269
Updated: 2026-11-02

CVE List 8.8

Record: CVE-2023-28339
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-269
Updated: 2026-11-02

EUVDEUVD-2023-32037 8.8

Record: EUVD-2023-32037
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-frg3-hpqv-5jmr 8.8

OpenDoas through 6.8.2, when TIOCSTI is available, allows privilege escalation because of sharing...

Record: GHSA-frg3-hpqv-5jmr
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-269
Updated: 2026-11-02

OSV 8.8

Record: CVE-2023-28339
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2023-28339 8.8

Record: DEBIAN-CVE-2023-28339
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2023-28339 8.8

Record: UBUNTU-CVE-2023-28339
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

opendoas project opendoas

Affected packages

Affected packages
Package	Affected	Fixed
`opendoas` Debian:12	All versions, plus listed versions 6.8.2-1	None known
`opendoas` Debian:14	All versions, plus listed versions 6.8.2-1	None known
`doas` Ubuntu:22.04:LTS	All versions, plus listed versions 6.8.1-26.8.1-3	None known
`opendoas` Ubuntu:24.04:LTS	All versions, plus listed versions 6.8.2-1	None known
`opendoas` Ubuntu:25.10	All versions, plus listed versions 6.8.2-1	None known
`opendoas` Ubuntu:26.10	All versions, plus listed versions 6.8.2-1build1	None known
`opendoas` Ubuntu:26.04:LTS	All versions, plus listed versions 6.8.2-16.8.2-1build1	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-28339 is a high vulnerability (CVSS 8.8) in Opendoas Project Opendoas, published March 14, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.64%, the 50th percentile. No source names a fixed version.