CVE-2023-40216

MEDIUM

OpenBSD 7.3 - Denial of Service via Crafted DCS or CSI Terminal Escape Sequences

Title source: llm
STIX 2.1

Description

OpenBSD 7.3 before errata 014 is missing an argument-count bounds check in console terminal emulation. This could cause incorrect memory access and a kernel crash after receiving crafted DCS or CSI terminal escape sequences.

References (2)

Core 2

Scores

CVSS v3 5.5
EPSS 0.0004
EPSS Percentile 13.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-862
Status published
Products (1)
openbsd/openbsd 7.3 (14 CPE variants)
Published Aug 10, 2023
Tracked Since Feb 18, 2026