{"id":"CVE-2026-30818","aliases":["EUVD-2026-20550","GHSA-28h6-3mx2-8gjg"],"status":"published","title":"OS Command Injection Vulnerability in dnsmasq Module in TP-Link AX53","description":"An OS command injection vulnerability in the dnsmasq module of TP-Link Archer AX53 v1.0 allows an authenticated adjacent attacker to execute arbitrary code when a specially crafted configuration file is processed due to insufficient input validation. Successful exploitation may allow the attacker to modify device configuration, access sensitive information, or further compromise system integrity.\n\nThis issue affects AX53 v1.0: before 1.7.1 Build 20260213.","severity":{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01292,"percentile":0.70513,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-78"],"published":"2026-04-08T17:54:44Z","modified":"2026-07-25T11:10:00Z","products":[{"vendor":"tp-link","product":"archer_ax53_firmware"},{"vendor":"tp-link systems inc.","product":"ax53 v1.0"}],"references":[{"url":"https://www.tp-link.com/my/support/download/archer-ax53/v1/#Firmware","tags":["patch","Product"]},{"url":"https://www.tp-link.com/en/support/download/archer-ax53/v1/#Firmware","tags":["patch","Product"]},{"url":"https://talosintelligence.com/vulnerability_reports/","tags":["third-party-advisory","Third Party Advisory"]},{"url":"https://www.tp-link.com/us/support/faq/5055/","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2306"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-30818"},{"url":"https://talosintelligence.com/vulnerability_reports"},{"url":"https://www.tp-link.com/us/support/faq/5055"},{"url":"https://github.com/advisories/GHSA-28h6-3mx2-8gjg"}],"sources":{"cve":[{"id":"CVE-2026-30818","title":"OS Command Injection Vulnerability in dnsmasq Module in TP-Link AX53","description":"An OS command injection vulnerability in the dnsmasq module of TP-Link Archer AX53 v1.0 allows an authenticated adjacent attacker to execute arbitrary code when a specially crafted configuration file is processed due to insufficient input validation. Successful exploitation may allow the attacker to modify device configuration, access sensitive information, or further compromise system integrity.\n\nThis issue affects AX53 v1.0: before 1.7.1 Build 20260213.","status":"published","published":"2026-04-08T17:54:44.175Z","modified":"2026-05-07T15:47:07.905Z","cvss":[{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L","level":"high","assessor":"cna"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T13:44:07.200604Z"}],"euvd":[{"id":"EUVD-2026-20550","description":"An OS command injection vulnerability in the dnsmasq module of TP-Link Archer AX53 v1.0 allows an authenticated adjacent attacker to execute arbitrary code when a specially crafted configuration file is processed due to insufficient input validation. Successful exploitation may allow the attacker to modify device configuration, access sensitive information, or further compromise system integrity.\n\nThis issue affects AX53 v1.0: before 1.7.1 Build 20260213.","status":"published","published":"2026-04-08T17:54:44Z","modified":"2026-05-07T15:47:07Z","cvss":[{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L","level":"high"}],"updated_at":"2026-11-02T19:05:14.902845Z"}],"ghsa":[{"id":"GHSA-28h6-3mx2-8gjg","title":"An OS command injection vulnerability in the dnsmasq module of TP-Link Archer AX53 v1.0 allows an...","description":"An OS command injection vulnerability in the dnsmasq module of TP-Link Archer AX53 v1.0 allows an authenticated adjacent attacker to execute arbitrary code when a specially crafted configuration file is processed due to insufficient input validation. Successful exploitation may allow the attacker to modify device configuration, access sensitive information, or further compromise system integrity.\n\nThis issue affects AX53 v1.0: before 1.7.1 Build 20260213.","status":"published","published":"2026-04-08T21:33:32Z","modified":"2026-05-07T18:31:38Z","cvss":[{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/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:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:07:57.010667Z"}],"nvd":[{"id":"CVE-2026-30818","description":"An OS command injection vulnerability in the dnsmasq module of TP-Link Archer AX53 v1.0 allows an authenticated adjacent attacker to execute arbitrary code when a specially crafted configuration file is processed due to insufficient input validation. Successful exploitation may allow the attacker to modify device configuration, access sensitive information, or further compromise system integrity.\n\nThis issue affects AX53 v1.0: before 1.7.1 Build 20260213.","status":"published","published":"2026-04-08T19:25:20.77Z","modified":"2026-07-25T11:10:00.1Z","cvss":[{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/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:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:12:13.535987Z"}]}}