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No exploitation reportedAwaiting NVD analysis

CVE-2026-120231

WAVLINK WN553X1-B OpenVPN CLI ioos sub_416568 os command injection

No exploitation reported by the sources we read.

  • Published2026-11-01
  • WeaknessCWE-77 · CWE-78

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A vulnerability was determined in WAVLINK WN553X1-B V260403_2.0.0. The affected element is the function sub_416568 of the file /bin/ioos of the component OpenVPN CLI Handler. This manipulation of the argument file_id causes os command injection. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure.

Timeline

dates in UTC
  1. 2026-11-0114:45CVE publishedCNA

Observed activity

isMalicious corpus · updated 2026-11-01 15:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-120231?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-120231?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

Products declared by the CNA

As VulDB, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • WAVLINK WN553X1-B
    Affected
    • = V260403_2.0.0no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-01

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-120231 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 4.09.42026-11-01
  • CNACVSS 3.19.92026-11-01
  • NVDCVSS 3.19.9read 2026-11-01
  • CNACVSS 3.09.92026-11-01
  • CNACVSS 2.092026-11-01
  • CNAweakness (CWE)CWE-77, CWE-782026-11-01
  • NVDweakness (CWE)CWE-77, CWE-78read 2026-11-01
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS 4.0 vector
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/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
Published
2026-11-01
Last Modified
2026-11-01
NVD status
Received
GitHub Advisory
GHSA-5268-gj55-x6jx

Frequently asked questions

What is CVE-2026-120231?

A vulnerability was determined in WAVLINK WN553X1-B V260403_2.0.0. The affected element is the function sub_416568 of the file /bin/ioos of the component OpenVPN CLI Handler. This manipulation of the argument file_id causes os command injection. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure.

Is CVE-2026-120231 actively exploited?

Active exploitation of CVE-2026-120231 has not been confirmed.

What is the CVSS score for CVE-2026-120231?

CVE-2026-120231 has a CVSS v3 base score of 9.9 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

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