What’s Vulnerable › Vulnerabilities

CVE-2023-40216

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-08-10 · updated 2026-06-17
• Weakness: CWE-862

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.

Affected products

• OpenBSD: 7.3, 7.3-errata_001, 7.3-errata_002, 7.3-errata_003, 7.3-errata_004, 7.3-errata_005 (+8)

References

• https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/014_wscons.patch.sig
• https://github.com/openbsd/src/commit/9d3f688f46eba347e96ff0ae9506ef2061622e0c
• https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/014_wscons.patch.sig
• https://github.com/openbsd/src/commit/9d3f688f46eba347e96ff0ae9506ef2061622e0c

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