CVE-2026-2526Public exploitNetwork attack vector

Authenticated command execution via unsanitized SSID2G2

Published Feb 16, 2026 · Updated Feb 16, 2026

Command injection in Wavlink WL-WN579A3 firmware 20210219 allows remote authenticated users to execute shell commands via SSID2G2. The multi_ssid handler in /cgi-bin/wireless.cgi copies the POST parameter into a command string with sprintf and passes it to system() without neutralizing shell syntax. A valid web-management session is required; successful exploitation runs attacker-selected commands on the network appliance.

CVSS severity8.8
High
EPSS probability8.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Wavlink WL-WN579A3 firmware 20210219 allows remote authenticated users to execute shell commands via SSID2G2. The multi_ssid handler in /cgi-bin/wireless.cgi copies the POST parameter into a command string with sprintf and passes it to system() without neutralizing shell syntax. A valid web-management session is required; successful exploitation runs attacker-selected commands on the network appliance.

The record

CVE
CVE-2026-2526
Published
Feb 16, 2026
Updated
Feb 16, 2026
Vendor
Wavlink
Product
WL-WN579A3
Classifications
CWE-74, CWE-77, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=20210219

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Wavlink · WL-WN579A3version=20210219

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
2.1VulDBCVSS: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
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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