CVE-2026-35718Public exploitNetwork attack vector

Authenticated file disclosure via faulty prefix validation

Published Jun 2, 2026 · Updated Jun 2, 2026

Path traversal in VIVOTEK FD8136 firmware 0300a allows remote authenticated users to read any device file via a crafted HTTP request. The /cgi-bin/admin/downloadMedias.cgi shell script checks only whether a decoded path starts with /mnt/auto/, then passes it to cat without resolving or rejecting traversal segments. HTTP Basic authentication is required; exploitation discloses filesystem contents without directly modifying data or interrupting service.

CVSS severity6.5
Medium
EPSS probability0.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in VIVOTEK FD8136 firmware 0300a allows remote authenticated users to read any device file via a crafted HTTP request. The /cgi-bin/admin/downloadMedias.cgi shell script checks only whether a decoded path starts with /mnt/auto/, then passes it to cat without resolving or rejecting traversal segments. HTTP Basic authentication is required; exploitation discloses filesystem contents without directly modifying data or interrupting service.

The record

CVE
CVE-2026-35718
Published
Jun 2, 2026
Updated
Jun 2, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-22, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 2, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1005Data from Local System

Public exploit references

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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