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CVE-2026-45255— Remote code execution via installer Wi-Fi access point scans

AI Predicted 7.8 Difficulty: Moderate EPSS 0.01% · P1

Possible ATT&CK Techniques 1AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 3

VendorProductVersion RangeStatus
FreeBSDFreeBSD15.0-RELEASE< p9affected
14.4-RELEASE< p5affected
14.3-RELEASE< p14affected
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I. Basic Information for CVE-2026-45255

Vulnerability Information

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Vulnerability Title
Remote code execution via installer Wi-Fi access point scans
Source: NVD (National Vulnerability Database)
Vulnerability Description
When bsdinstall or bsdconfig are prompted to scan for nearby Wi-Fi networks, they build up a list of network names and use bsddialog(1) to prompt the user to select a network. This is implemented using a shell script, and the code which handled network names was not careful to prevent expansion by the shell. As a result, a suitably crafted network name can be used to execute commands via a subshell. The problem can be exploited to execute code as root on the system running bsdinstall or bsdconfig. The attacker would need to create an access point with a specially crafted name and be within range of a Wi-Fi scan. Note that bsdinstall and bsdconfig are vulnerable as soon as the user prompts them to scan for nearby networks; they do not need to actually select the malicious network.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
FreeBSD 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreeBSD是FreeBSD基金会的一套类Unix操作系统。 FreeBSD存在操作系统命令注入漏洞,该漏洞源于扫描Wi-Fi网络时未防止shell扩展网络名称,可能导致特制网络名称通过子shell执行命令,攻击者需创建具有特制名称的接入点并在Wi-Fi扫描范围内,用户提示扫描时即触发漏洞,无需选择恶意网络。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
FreeBSDFreeBSD 15.0-RELEASE ~ p9 -

II. Public POCs for CVE-2026-45255

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III. Intelligence Information for CVE-2026-45255

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Vendor Advisories for CVE-2026-45255 (1)

Same Patch Batch · FreeBSD · 2026-05-21 · 7 CVEs total

CVE-2026-45250Stack buffer overflow via setcred(2)
CVE-2026-45252Heap overflow in FUSE_LISTXATTR
CVE-2026-45251Kernel use-after-free via file descriptor syscalls
CVE-2026-45253Missing validation in ptrace(PT_SC_REMOTE)
CVE-2026-45254Incorrect libcap_net limitation list manipulation
CVE-2026-39461select(2) file descriptor set overflow causes stack overflow

IV. Related Vulnerabilities

V. Comments for CVE-2026-45255

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