CVE-2026-31927Network attack vector

Arbitrary file overwrite via CSV path traversal

Published Apr 17, 2026 · Updated Apr 17, 2026

Relative path traversal in Anviz CX7 Firmware allows remote authenticated users to overwrite arbitrary files through a crafted CSV upload. The CSV upload handler accepts traversal sequences and writes outside its intended directory, including to /etc/shadow. All versions are affected, but administrative access is required; changing debug settings and replacing the password file enables unauthorized SSH access.

CVSS severity4.9
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Relative path traversal in Anviz CX7 Firmware allows remote authenticated users to overwrite arbitrary files through a crafted CSV upload. The CSV upload handler accepts traversal sequences and writes outside its intended directory, including to /etc/shadow. All versions are affected, but administrative access is required; changing debug settings and replacing the password file enables unauthorized SSH access.

The record

CVE
CVE-2026-31927
Published
Apr 17, 2026
Updated
Apr 17, 2026
Vendor
Anviz
Product
CX7 Firmware
Classifications
CWE-23, T1068
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All versions

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Anviz · CX7 Firmwareversion=All versions

Published CVSS scores

4.9CISA ICS-CERTCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-23Relative Path Traversal
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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