CyberSecBulletin
CVE-2026-2670NVD status: Deferred

WISE-6610-NB: Improper Neutralization of Special Elements used in a Command

Published Updated By the CyberSecBulletin desk

CVE-2026-2670 is a high-severity improper neutralization of special elements used in a command vulnerability in WISE-6610-NB from Advantech, with a CVSS 3.1 base score of 7.2 out of 10. It can be exploited remotely over the network by an attacker with administrator privileges, without any action from a user. Affected WISE-6610-NB versions: 1.2.1_20251110. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 13.7% chance of exploitation within 30 days, which is in the top 3.44% of all scored CVEs.

Patch this week

EPSS places it among the vulnerabilities most likely to be exploited soon.

What to do

  1. Check which version of WISE-6610-NB you run against the affected versions below, and install the vendor's latest release.
  2. Read the advisory on advantech.com for workarounds and exact fixed builds.

Affected products and versions

VendorProductAffected versionsFixed in
AdvantechWISE-6610-NB1.2.1_20251110Not stated
AdvantechWISE-6610-EB1.2.1_20251110Not stated
AdvantechWISE-6610-TB1.2.1_20251110Not stated
AdvantechWISE-6610-JB1.2.1_20251110Not stated
AdvantechWISE-6610-CB1.2.1_20251110Not stated
AdvantechWISE-6610-EL-NB1.2.1_20251110Not stated
AdvantechWISE-6610-EL-EB1.2.1_20251110Not stated
AdvantechWISE-6610-EL-TB1.2.1_20251110Not stated
AdvantechWISE-6610-EL-JB1.2.1_20251110Not stated
AdvantechWISE-6610-EL-CB1.2.1_20251110Not stated
AdvantechWISE-6610P-DEA1.2.1_20251110Not stated
AdvantechWISE-6610P-DNA1.2.1_20251110Not stated
AdvantechWISE-6610P-DTA1.2.1_20251110Not stated

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
HighAdministrator-level access is required first.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H. Scored by CNA (vuldb.com).

Scoring systemScoreSeverityScored by
CVSS 4.07.3HighCNA (vuldb.com)
CVSS 3.17.2HighCNA (vuldb.com)
CVSS 2.08.3HighCNA (vuldb.com)

Official description

A vulnerability was identified in Advantech WISE-6610-NB, WISE-6610-EB, WISE-6610-TB, WISE-6610-JB, WISE-6610-CB, WISE-6610-EL-NB, WISE-6610-EL-EB, WISE-6610-EL-TB, WISE-6610-EL-JB, WISE-6610-EL-CB, WISE-6610P-DEA, WISE-6610P-DNA and WISE-6610P-DTA 1.2.1_20251110. Affected is an unknown function of the file /cgi-bin/luci/admin/openvpn_apply of the component Background Management. Such manipulation of the argument delete_file leads to os command injection. The attack can be executed remotely. The exploit is publicly available and might be used. Upgrading to version 1.2.4_20260821 is able to address this issue. It is advisable to upgrade the affected component. The vendor explains: "The delete operation has been redesigned to map the requested file type to a fixed allowlisted path, require a numeric tunnel ID, reject invalid requests, and use the native filesystem API (fs.unlink) instead of constructing a shell command from request data."

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Improper Neutralization of Special Elements used in a Command

The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.

How developers prevent this class of flaw

  • If at all possible, use library calls rather than external processes to recreate the desired functionality.
  • If possible, ensure that all external commands called from the program are statically created.
  • Run time: Run time policy enforcement may be used in an allowlist fashion to prevent use of any non-sanctioned commands.

More Improper Neutralization of Special Elements used in a Command vulnerabilities (CWE-77)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: poc, automatable: no, technical impact: total).
  3. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in WISE-6610-NB

All WISE-6610-NB vulnerabilities

Recent Improper Neutralization of Special Elements used in a Command vulnerabilities

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