Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-38819

Quick assessment

Affected
openNDS openNDS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

以下是该漏洞描述的中文翻译： openNDS 11.0.0 之前的版本中存在多个内存泄漏漏洞，允许处于 Captive Portal（强制门户）网络中的未认证攻击者在几分钟内耗尽设备的所有可用内存。 术语说明： Captive Portal (强制门户/强制网关)：通常指需要登录才能访问互联网的网络环境（如酒店、机场或企业WiFi），在openNDS上下文中，指的是连接到该网络的客户端。 Unauthenticated attacker：未认证攻击者，即不需要登录凭证即可利用该漏洞。 Exhaust memory*

CVSS 5.3 · Medium EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1498 · Network Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
openNDS openNDS < 11.0.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-38819

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Multiple memory leaks in openNDS before 11.0.0 allow an unauthenticated attacker on the captive portal network to exhaust all available memory on the device within minutes.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在移除最后引用时对内存的释放不恰当(内存泄露)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
openNDS openNDS 0 ~ 11.0.0 -

II. Public POCs for CVE-2026-38819

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-38819

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-38819 (2)

Same Patch Batch · openNDS · 2026-08-28 · 4 CVEs total

CVE-2026-38820 8.3 HIGH openNDS 11.0.0前存在Shell命令注入
CVE-2026-38822 7.6 HIGH openNDS 11.0.0 前客户端脚本命令注入
CVE-2026-38821 7.1 HIGH openNDS 11.0.0 前堆缓冲区溢出漏洞

IV. Related Vulnerabilities

Same product: openNDS
Same vendor: openNDS
Same weakness: CWE-401

V. Comments for CVE-2026-38819

No comments yet

Leave a comment