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Vulnerability record · CVE-2025-59367 · published 13 November 2025

CVE-2025-59367: Asus dsl-ac51 firmware authentication bypass via alternate path vulnerability

Asus · Dsl Ac51 Firmware

An authentication bypass vulnerability has been identified in certain DSL series routers, may allow remote attackers to gain unauthorized access into the affected system. Refer to the 'Security Update for DSL Series Router' section on the ASUS Security Advisory for more information.

9.3 CVSS 4.0 Critical EPSS 0.85% · top 43.5% CWE-288 · Authentication bypass via alternate pathCWE-306 · Missing authentication for critical function
9.3CVSS 4.0 base score
0.85%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

An authentication bypass vulnerability has been identified in certain DSL series routers, may allow remote attackers to gain unauthorized access into the affected system. Refer to the 'Security Update for DSL Series Router' section on the ASUS Security Advisory for more information.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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

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

References

LinkTags
https://www.asus.com/security-advisory Vendor Advisory
https://www.asus.com/security-advisory Vendor Advisory

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Related vulnerabilities

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

9.8CVE-2017-14698Asus dsl-ac51 firmware improper authentication vulnerabilityASUS DSL-AC51, DSL-AC52U, DSL-AC55U, DSL-N55U C1, DSL-N55U D1, DSL-AC56U, DSL-N10_C1, DSL-N12U C1, DSL-N12E C1, DSL-N14U, DSL-N14U-B1, DSL-N16, DSL-N…EPSS 1.3%6.5CVE-2017-14699Asus dsl-ac51 firmware xml external entity (xxe) vulnerabilityMultiple XML external entity (XXE) vulnerabilities in the AiCloud feature on ASUS DSL-AC51, DSL-AC52U, DSL-AC55U, DSL-N55U C1, DSL-N55U D1, DSL-AC56U…EPSS 1.0%10.0CVE-2026-20079Cisco Secure Firewall Management Center authentication bypass to rootCisco Secure Firewall Management Center (FMC) Software contains an authentication bypass caused by an improper system process created at boot time. A…KEVEPSS 88%analysed9.3CVE-2026-19490Citrix NetScaler ADC and Gateway authentication bypass via alternate pathNetScaler ADC and NetScaler Gateway contain an authentication bypass via an alternate path or channel (CWE-288). The flaw is remotely reachable witho…KEVEPSS 7.0%analysed8.2CVE-2026-18556N-able N-central authentication bypass via alternate pathN-able N-central contains an authentication bypass (CWE-288) that lets an attacker reach protected functionality through an alternate path or channel…KEVEPSS 7.9%analysed8.2CVE-2026-18577N-able N-central incomplete patch enables auth bypass and account takeoverAn incomplete fix for CVE-2026-18556 leaves an alternate-path authentication bypass in N-able N-central through version 2026.3.1. Because the origina…KEVEPSS 15%analysed7.5CVE-2026-1603Ivanti Endpoint Manager authentication bypass leaks stored credentialsIvanti Endpoint Manager before 2024 SU5 contains an authentication bypass (CWE-288/CWE-306) that lets a remote, unauthenticated attacker reach a func…KEVEPSS 88%analysed9.8CVE-2026-24858Fortinet FortiCloud SSO authentication bypass across registered devicesA CWE-288 authentication bypass in Fortinet FortiAnalyzer, FortiManager, FortiNAC-F, FortiOS, FortiProxy and FortiWeb lets an attacker with a FortiCl…KEVEPSS 86%analysed

Source: NIST National Vulnerability Database (record CVE-2025-59367), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.