CyberSecBulletin
CVE-2026-44097NVD status: Deferred

CHARX SEC-3150: Unrestricted Upload of File with Dangerous Type

Published Updated By the CyberSecBulletin desk

CVE-2026-44097 is a high-severity unrestricted upload of file with dangerous type vulnerability in CHARX SEC-3150 from Phoenix Contact, with a CVSS 3.1 base score of 7.1 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. The record lists version 1.9.1 as the first without the flaw, so updating CHARX SEC-3150 to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.43% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update CHARX SEC-3150 to 1.9.1 or a later version.
  2. Update CHARX SEC-3100 to 1.9.1 or a later version.
  3. Update CHARX SEC-3050 to 1.9.1 or a later version.

Affected products and versions

VendorProductAffected versionsFixed in
Phoenix ContactCHARX SEC-31501.0.0 up to, but not including, 1.9.11.9.1
Phoenix ContactCHARX SEC-31001.0.0 up to, but not including, 1.9.11.9.1
Phoenix ContactCHARX SEC-30501.0.0 up to, but not including, 1.9.11.9.1
Phoenix ContactCHARX SEC-30001.0.0 up to, but not including, 1.9.11.9.1

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
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
NoneNo data is disclosed.
Integrity
LowLimited modification of data is possible.
Availability
HighThe component can be taken down completely.

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

Scoring systemScoreSeverityScored by
CVSS 4.05.3MediumCNA (cert.vde.com)
CVSS 3.17.1HighCNA (cert.vde.com)

Official description

A low-privileged remote attacker with "operator" access can upload arbitrary files via the REST endpoint intended for firmware updates, resulting in persistent storage of attacker-controlled files and potentially exhausting resources, which might lead to Denial-of-Service.

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

The underlying weakness: Unrestricted Upload of File with Dangerous Type

The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.

How developers prevent this class of flaw

  • Generate a new, unique filename for an uploaded file instead of using the user-supplied filename, so that no external input is used at all.
  • When the set of acceptable objects, such as filenames or URLs, is limited or known, create a mapping from a set of fixed input values (such as numeric IDs) to the actual filenames or URLs, and reject all other inputs.
  • Consider storing the uploaded files outside of the web document root entirely. Then, use other mechanisms to deliver the files dynamically.

More Unrestricted Upload of File with Dangerous Type vulnerabilities (CWE-434)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
  3. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in CHARX SEC-3150

All CHARX SEC-3150 vulnerabilities

Recent Unrestricted Upload of File with Dangerous Type vulnerabilities

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