CVE-2026-120228: WAVLINK WN553X1-B

WAVLINK WN553X1-B ioos Service sub_416D88 os command injection

CVSS 9.4 CriticalCriticalEPSS 0.017 · 76th percentile

Critical, because:

CVSS score 9.4: 9.0 or more.

Published by the CVE Program (CNA: VulDB) at 1 Nov 2026, 13:45 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
WAVLINK	WN553X1-B	affected V260403_2.0.0

Identifiers

CVE-2026-120228

CNA

VulDB

Weakness (CWE)

CWE-77 · CWE-78

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
9.4	Critical	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P	CNA (VulDB)Used for this record
9.9	Critical	3.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R	CNA (VulDB)
9.9	Critical	3.0	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R	CNA (VulDB)
9.0	High	2.0	AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR	CNA (VulDB)

CISA KEV Not listed.
EPSS 0.017, the 76th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

1 Nov 2026, 13:45 UTC Confirmed by the CVE List
1 Nov 2026, 13:52 UTC First seen by agentprime
1 Nov 2026, 14:18 UTC Confirmed by NVD

Sources

References from the CNA

vuldb.com/vuln/429587 vdb-entrytechnical-description
vuldb.com/vuln/429587/cti signaturepermissions-required
vuldb.com/cve/CVE-2026-120228 third-party-advisory
vuldb.com/submit/919151 third-party-advisory
github.com/senxitoyshuyi-ui/IOT-CVE/blob/main/vulns/WAVLINK%20WN553X1-B%20Router.md exploit

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.