Cyber Resilience

CVE-2026-1972

Edimax Br-6208Ac Firmware ≤ 1.02

Public PoC
Published
06 February 2026
Modified
20 February 2026
CVSS Score v4 5.5
Click a component to see what it means
Raw vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/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
EPSS Score 0.0060 46th percentile
Risk Priority 39 floored blend · peak EPSS

Summary

CVE-2026-1972 is a medium-severity Use of Default Credentials (CWE-1392) vulnerability in Edimax Br-6208Ac Firmware. Its CVSS base score is 5.5 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Default Accounts (T1078.001); ranked at the 46th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to CM-6 (Configuration Settings) and IA-5 (Authenticator Management) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2026-1972 is a vulnerability in the Edimax BR-6208AC router firmware version 2_1.02, specifically affecting the auth_check_userpass2 function. It enables attackers to manipulate the Username/Password argument, resulting in the use of default credentials. This issue, classified under CWE-1392, carries a CVSS v3.1 base score of 5.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N), indicating medium severity with low confidentiality impact.

The vulnerability can be exploited remotely by unauthenticated attackers over the network with low complexity and no user interaction required. Successful exploitation allows limited access to confidential information via the default credentials, as the attack vector is network-accessible and requires no privileges.

Advisories note that the affected product is end-of-life and no longer supported by the vendor, who confirms it impacts only unsupported devices. Edimax states they will issue a consolidated Security Advisory on their official support website, but no patches are available due to the product's discontinued status.

The exploit has been made publicly available, increasing the risk for deployed devices. References include detailed analyses on VulDB and a Notion page documenting the weak password authentication issue.

OWASP Top 10 for Web (2025)

A07:2025 Authentication Failures

EU & UK References

Vulnerability Data

A vulnerability was found in Edimax BR-6208AC 2_1.02. The affected element is the function auth_check_userpass2. Performing a manipulation of the argument Username/Password results in use of default credentials. The attack may be initiated remotely. The exploit has been made public…

more

and could be used. The vendor confirms that the affected product is end-of-life. They confirm that they "will issue a consolidated Security Advisory on our official support website." This vulnerability only affects products that are no longer supported by the maintainer.

CWE(s)
CWE-1392

Related Threats

MITRE ATT&CK Enterprise Techniques

T1078.001 Default Accounts Stealth
Adversaries may obtain and abuse credentials of a default account as a means of gaining Initial Access, Persistence, Privilege Escalation, or Defense Evasion.
attack.mitre.org →
T1078 Valid Accounts Stealth
Adversaries may obtain and abuse credentials of existing accounts as a means of gaining Initial Access, Persistence, Privilege Escalation, or Defense Evasion.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1021 Remote Services Lateral Movement
Adversaries may use [Valid Accounts](https://attack.
attack.mitre.org →
T1133 External Remote Services Persistence
Adversaries may leverage external-facing remote services to initially access and/or persist within a network.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2025-14910Same product: Edimax Br-6208Ac
CVE-2025-70161Same product: Edimax Br-6208Ac
CVE-2025-15257Same product: Edimax Br-6208Ac
CVE-2025-15256Same product: Edimax Br-6208Ac
CVE-2025-15258Same product: Edimax Br-6208Ac Firmware
CVE-2025-10542Shared CWE-1392
CVE-2024-28093Shared CWE-1392
CVE-2025-2119Shared CWE-1392
CVE-2026-58466Shared CWE-1392
CVE-2025-30139Shared CWE-1392

Affected Assets

edimax
br-6208ac firmware
≤ 1.02

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V13.2.1

Mitigating Controls (NIST 800-53 r5) AI

CM-6 Configuration Settings good match

Secure configuration settings establish baselines that prohibit default credentials on system components.

IA-5 Authenticator Management good match

Authenticator management requires verification of identity and secure distribution of initial authenticators, directly stopping default credentials from being left in place.

RA-5 Vulnerability Monitoring and Scanning good match

Vulnerability scanning can discover default credentials after deployment but does not stop their introduction.

AC-2 Account Management partial match

Account management processes include assignment and control of initial account credentials, reducing the chance defaults remain active.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-01 full match
prevents

Hardened baselines and configuration management explicitly prohibit default credentials on deployed systems.

PR.AA-01 mostly match
prevents

Credential management processes directly require replacing or disabling default passwords and keys.

PR.AA-03 partial match
prevents

Authentication policies can enforce non-default credential strength but do not explicitly address initial deployment defaults.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.9 Configuration management mostly match
prevents

The requirement to replace vendor default authentication information immediately after installation directly counters the use of default credentials that attackers commonly target.

References