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CVE-2026-112016— Netcore NR256CN through 1.5.140116 Unauthenticated Write to Fixed Boa Staging Files

Quick assessment

Affected
Netcore NR256CN
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.

Netcore NR256CN 固件版本 1.5.140116 及以下存在未经身份验证的文件写入漏洞。该漏洞源于其基于 Boa 的 Web 服务器，允许远程攻击者覆盖更新和恢复的暂存文件。攻击者可通过向不存在的 路径发送 POST 请求，将受攻击者控制的内容写入 或 文件，从而篡改待处理的固件升级或配置恢复操作，或导致拒绝服务（DoS）。

CVSS 6.5 · Medium

Affected Version Matrix 1

VendorProduct Version RangeStatus
Netcore NR256CN ≤ 1.5.140116 affected
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I. Basic Information for CVE-2026-112016

Vulnerability Information
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Vulnerability Title
Netcore NR256CN through 1.5.140116 Unauthenticated Write to Fixed Boa Staging Files
Source: CVE Program / CVE List V5
Vulnerability Description
Netcore NR256CN through 1.5.140116 contains an unauthenticated file write vulnerability in the Boa-derived /bin/boa web server that allows remote attackers to overwrite update and restore staging files. Attackers can POST to a non-existent .cgi pathname to write attacker-controlled content into /tmp/boa_temp.update or /tmp/boa_temp.para, tampering with pending firmware updates or configuration restores or causing denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Netcore NR256CN 0 ~ 1.5.140116 -

II. Public POCs for CVE-2026-112016

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III. Intelligence Information for CVE-2026-112016

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Vendor Advisories for CVE-2026-112016 (1)

Proof of Concept for CVE-2026-112016 (1)

IV. Related Vulnerabilities

Same product: NR256CN
Same vendor: Netcore
Same weakness: CWE-306

V. Comments for CVE-2026-112016

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