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CVE-2026-51656

Quick assessment

Affected
n/a n/a
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.

TOTOLINK T6是中国TOTOLINK公司的一款高性能网络路由器。 TOTOLINK T6 4.1.5cu.748_B20211015版本存在安全漏洞，该漏洞源于getVpnPassCfg函数存在访问控制不当，可能导致未经身份验证的攻击者通过向/cgi-bin/cstecgi.cgi发送特制POST请求获取VPN pass-through和WAN ping filter设置。

AI Predicted 5.3 Difficulty: Easy EPSS 0.29% · P20

Affected Version Matrix 1

VendorProduct Version RangeStatus
n/a n/a n/a affected
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I. Basic Information for CVE-2026-51656

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Incorrect access control in the getVpnPassCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to obtain VPN pass-through and WAN ping filter settings via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
TOTOLINK T6 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK T6是中国TOTOLINK公司的一款高性能网络路由器。 TOTOLINK T6 4.1.5cu.748_B20211015版本存在安全漏洞，该漏洞源于getVpnPassCfg函数存在访问控制不当，可能导致未经身份验证的攻击者通过向/cgi-bin/cstecgi.cgi发送特制POST请求获取VPN pass-through和WAN ping filter设置。
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

Vendor Product Affected Versions CPE Subscribe
- n/a n/a -

II. Public POCs for CVE-2026-51656

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III. Intelligence Information for CVE-2026-51656

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Vendor Pages for CVE-2026-51656 (1)

Same Patch Batch · n/a · 2026-08-28 · 69 CVEs total

CVE-2026-51619 TOTOLINK T6 安全漏洞
CVE-2026-50980 Osbil oPanel 安全漏洞
CVE-2026-51662 TOTOLINK T6 安全漏洞
CVE-2026-39071 WordPress Spiffy Plugin 安全漏洞
CVE-2026-51624 TOTOLINK T6 安全漏洞
CVE-2026-51637 TOTOLINK T6 安全漏洞
CVE-2026-51646 TOTOLINK T6 安全漏洞
CVE-2026-51644 TOTOLINK T6 安全漏洞
CVE-2026-51626 TOTOLINK T6 安全漏洞
CVE-2026-51638 TOTOLINK T6 安全漏洞
CVE-2026-51658 TOTOLINK T6 安全漏洞
CVE-2026-51653 TOTOLINK T6 安全漏洞
CVE-2026-51634 TOTOLINK T6 安全漏洞
CVE-2026-51641 TOTOLINK T6 安全漏洞
CVE-2026-51614 TOTOLINK T6 安全漏洞
CVE-2026-51631 TOTOLINK T6 安全漏洞
CVE-2026-51616 TOTOLINK T6 安全漏洞
CVE-2026-51625 TOTOLINK T6 安全漏洞
CVE-2026-51618 TOTOLINK T6 安全漏洞
CVE-2026-51649 TOTOLINK T6 安全漏洞

Showing top 20 of 69 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

V. Comments for CVE-2026-51656

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