CVE-2026-45254— Incorrect libcap_net limitation list manipulation
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2026-45254
Vulnerability Information
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Vulnerability Title
Incorrect libcap_net limitation list manipulation
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the case of the cap_net service, when a key present in the old limit was omitted from the new limit, the missing key was treated as "allow any" instead of being rejected. In certain scenarios, an application that had previously restricted a subset of network operations could ask for a new limit that extended the permissions of the process.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
特权管理不恰当
Source: NVD (National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-45254
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · FreeBSD · 2026-05-21 · 7 CVEs total
| CVE-2026-45255 | Remote code execution via installer Wi-Fi access point scans | |
| CVE-2026-39461 | select(2) file descriptor set overflow causes stack overflow | |
| CVE-2026-45253 | Missing validation in ptrace(PT_SC_REMOTE) | |
| CVE-2026-45252 | Heap overflow in FUSE_LISTXATTR | |
| CVE-2026-45251 | Kernel use-after-free via file descriptor syscalls | |
| CVE-2026-45250 | Stack buffer overflow via setcred(2) |
IV. Related Vulnerabilities
Same product: FreeBSD
- CVE-2026-45255
Remote code execution via installer Wi-Fi access point scans - CVE-2026-39461
select(2) file descriptor set overflow causes stack overflow - CVE-2026-45253
Missing validation in ptrace(PT_SC_REMOTE) - CVE-2026-45252
Heap overflow in FUSE_LISTXATTR - CVE-2026-45251
Kernel use-after-free via file descriptor syscalls
Same vendor: FreeBSD
- CVE-2026-45255
Remote code execution via installer Wi-Fi access point scans - CVE-2026-39461
select(2) file descriptor set overflow causes stack overflow - CVE-2026-45253
Missing validation in ptrace(PT_SC_REMOTE) - CVE-2026-45252
Heap overflow in FUSE_LISTXATTR - CVE-2026-45251
Kernel use-after-free via file descriptor syscalls
Same weakness: CWE-269
- CVE-2026-5118
Divi Form Builder <= 5.1.2 - Unauthenticated Privilege Escal - CVE-2026-7467
Read More & Accordion <= 3.5.7 - Privilege Escalation via im - CVE-2026-7284
Easy Elements for Elementor <= 1.4.4 - Unauthenticated Privi - CVE-2026-8719
AI Engine 3.4.9 - Authenticated (Subscriber+) Privilege Esca - CVE-2026-45395
Open WebUI: Missing `workspace.tools` Authorization Check on
V. Comments for CVE-2026-45254
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