What is the CVSS score of CVE-2026-2528?

CVE-2026-2528 has a CVSS 4.0 base score of 2.1 (Low). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P. EPSS exploitation probability: 0.4%.

Is there a public PoC exploit available for CVE-2026-2528?

Yes, a public proof-of-concept exploit is available for CVE-2026-2528. Prioritise patching immediately. EPSS: 0.4%.

How to fix or mitigate CVE-2026-2528?

Within 30 days: Identify affected systems running Wavlink WL-WN579A3 and apply vendor patches as part of regular patch cycle. Validate input sanitization for user-controlled parameters.

Wl Wn579a3 Firmware CVE-2026-2528

LOW

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') (CWE-74)

2026-02-16 cna@vuldb.com

Command Injection Wl Wn579a3 Firmware Wavlink

2.1

CVSS 4.0 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-74 OWASP Top 10:2025 A05:2025 - Injection ASVS 5.0 V1 - Encoding and Sanitization Input neutralization, injection prevention
Impact	CVSS 6.3 (MEDIUM). Attack vector: Network. Complexity: Low. Privileges required: Low. User interaction: None. Exploitable via remote/network. Public exploit/POC available.
Exploit ScenarioDerived	A remote attacker could exploit this flaw, command injection.

Monitor Track and reassess. Why: LOW severity (CVSS 0.1-3.9).

No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Command injection in the Wavlink WL-WN579A3 wireless router firmware allows authenticated remote attackers to execute arbitrary commands through the delete_list parameter in the /cgi-bin/wireless.cgi endpoint. Public exploit code exists for this vulnerability, and no vendor patch is currently available. Affected devices running firmware versions up to 20210219 face risk of complete system compromise from authenticated network access.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:54 CVSS 6.3

A vulnerability was identified in Wavlink WL-WN579A3 up to 20210219. Affected by this vulnerability is the function Delete_Mac_list of the file /cgi-bin/wireless.cgi. [CVSS 6.3 MEDIUM]

RemediationAI

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Affects Wl-Wn579A3 Firmware. A vulnerability was identified in Wavlink WL-WN579A3 up to 20210219. Affected by this vulnerability is the function Delete_Mac_list of the file /cgi-bin/wireless.cgi. The manipulation of the argument delete_list leads to command injection. Remote exploitation of the attack is possible. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 2.1 LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

None

Privileges Required

Low

User Interaction

None

Vulnerable system: Confidentiality

Low

Vulnerable system: Integrity

Low

Vulnerable system: Availability

Low

Subsequent system: Confidentiality

None

Subsequent system: Integrity

None

Subsequent system: Availability

None

Lifecycle Timeline

Severity Changed

Apr 29, 2026 - 01:11 NVD

MEDIUM LOW

CVSS changed

Apr 29, 2026 - 01:11 NVD

6.3 (MEDIUM) 2.1 (LOW)

PoC Detected

Feb 18, 2026 - 20:04 vuln.today

Public exploit code

CVE Published

Feb 16, 2026 - 02:16 nvd

MEDIUM 6.3

DescriptionCVE.org

A vulnerability was identified in Wavlink WL-WN579A3 up to 20210219. Affected by this vulnerability is the function Delete_Mac_list of the file /cgi-bin/wireless.cgi. The manipulation of the argument delete_list leads to command injection. Remote exploitation of the attack is possible. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Executive ViewAI

Why It Matters

Organizations using Wavlink WL-WN579A3 should be aware of moderate risk from CVE-2026-2528, a injection vulnerability rated CVSS 6.3. Exploitation could allow attackers to execute code or inject malicious input. Proof-of-concept code is publicly available. Organizations should apply vendor updates when available and monitor for exploitation.

Business Impact: Low

Compensating Controls

Apply vendor patch. If patching is delayed: deploy WAF rules, restrict network access, enable logging.

Threat Intelligence Overview

EPSS Score

0.4%

Top 41% exploitable

Exploit

POC

Public exploit code exists

Data Quality

5 sources

Confidence: Medium

NVD

CVE.org

EPSS

GitHub

VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity LOW

CISA KEV No

Public POC Yes

EPSS 0.4%

Patch available No

Active threat No

Deciding rule

LOW severity (CVSS 0.1-3.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.