CVE-2026-6559

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.27% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 18.4% of scored records. A rank, not a probability.

NVD base score

5.3 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/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:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-04-19 05:15Z4 MO AGO

Last updated

2026-04-20 16:07Z4 MO AGO

Reserved

2026-04-18

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

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

Weaknesses

• CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base
• CWE-94Improper Control of Generation of Code ('Code Injection')Base

Data version

5.2

Document digest

54380bf077b11ecf23546dc902a3d34c0657b25fa01e477f6708fb866992c375

• vuldb.comVDB-358196 | Wavlink WL-WN579A3 login.cgi sub_401F80 cross site scriptinghttps://vuldb.com/vuln/358196vdb-entrytechnical-description
• vuldb.comVDB-358196 | CTI Indicators (IOB, IOC, TTP, IOA)https://vuldb.com/vuln/358196/ctisignaturepermissions-required
• vuldb.comSubmit #785303 | Wavlink WL-WN579A3 V220323 Cross Site Scriptinghttps://vuldb.com/submit/785303third-party-advisory
• github.comhttps://github.com/Litengzheng/vul_db/blob/main/WL-WN579A3/vul_16/README.mdbroken-link
• dl.wavlink.comhttps://dl.wavlink.com/firmware/RD/WINSTAR_WN579A3-A-2026-03-10-94f93d4-WO-mt7628-squashfs-sysupgrade.binpatch