← Vulnerability feed

Vulnerability record · CVE-2026-75616 · published 19 August 2026

CVE-2026-75616: Tp-link archer c20 firmware os command injection vulnerability

Tp Link · Archer C20 Firmware

An OS command injection vulnerability exists in the web management interface of Archer C20 v6 firmware when processing certain WAN-related configuration operations. An authenticated administrator may exploit insufficient input validation to execute arbitrary system commands, potentially resulting in full device compromise. Successful exploitation may allow arbitrary command execution with elevated privileges, compromising the confidentiality, integrity, and availability of the affected device and network traffic passing through it.

8.5 CVSS 4.0 High EPSS 2.8% · top 13.2% CWE-78 · OS command injection
8.5CVSS 4.0 base score
2.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
8 Sep 2026Last modified by NVD

Description

An OS command injection vulnerability exists in the web management interface of Archer C20 v6 firmware when processing certain WAN-related configuration operations. An authenticated administrator may exploit insufficient input validation to execute arbitrary system commands, potentially resulting in full device compromise. Successful exploitation may allow arbitrary command execution with elevated privileges, compromising the confidentiality, integrity, and availability of the affected device and network traffic passing through it.

CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.tp-link.com/en/support/download/archer-c20/v6/#Firmware Product
https://www.tp-link.com/en/support/faq/5252/ Vendor Advisory
https://www.tp-link.com/us/support/download/archer-c20/v6.46/#Firmware Product

Track CVE-2026-75616 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2023-37284Tp-link archer c20 firmware improper authentication vulnerabilityImproper authentication vulnerability in Archer C20 firmware versions prior to 'Archer C20(JP)_V1_230616' allows a network-adjacent unauthenticated a…EPSS 0.41%7.5CVE-2023-30383Tp-link archer c2 v1 firmware classic buffer overflow vulnerabilityTP-LINK Archer C50v2 Archer C50(US)_V2_160801, TP-LINK Archer C20v1 Archer_C20_V1_150707, and TP-LINK Archer C2v1 Archer_C2_US__V1_170228 were discov…EPSS 1.4%7.2CVE-2026-0834Tp-link archer ax53 firmware authentication bypass by spoofing vulnerabilityLogic vulnerability in TP-Link Archer C20 v5, 6.0, Archer AX53 v1.0 and TL-WR841N v13 (TDDP module) allows unauthenticated adjacent attackers to exec…EPSS 0.43%5.9CVE-2025-15551Tp-link archer mr200 firmware vulnerabilityThe response coming from TP-Link Archer MR200 v5.2, C20 v5 and v6, TL-WR850N v3, and TL-WR845N v4 for any request is getting executed by the JavaScri…EPSS 0.44%8.6CVE-2026-111560Barracuda email security gateway 300 firmware os command injection vulnerabilityImproper neutralization of shell metacharacters in the timezone configuration field in certain Barracuda appliance products using common Barracuda co…KEVEPSS 6.2%9.8CVE-2026-116779Freeswitch command injection vulnerabilityFreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation tha…KEVEPSS 2.5%7.8CVE-2026-46300Linux kernel out-of-bounds write vulnerabilityIn the Linux kernel, the following vulnerability has been resolved: net: skbuff: preserve shared-frag marker during coalescing skb_try_coalesce() can…KEVEPSS 16%9.2CVE-2026-111497Google brotli unchecked return value vulnerabilityA buffer overflow vulnerability in the Brotli decoder (c/dec/decode.c) in Google Brotli versions 1.0.3 through 1.2.0 on all platforms allows a remote…KEVEPSS 83%

Source: NIST National Vulnerability Database (record CVE-2026-75616), CISA KEV, FIRST EPSS (scores of 2026-11-11). This page is refreshed as NVD updates the record.