CVE-2026-15204Public exploitNetwork attack vector

Unauthenticated OpenVPN file disclosure via path traversal

Published Jul 9, 2026 · Updated Jul 9, 2026

Path traversal in TOTOLINK X5000R firmware allows remote attackers to read generated OpenVPN export files without authentication. The exportOvpn handler accepts ../ segments in the positional name or username field and resolves them with a forced .ovpn or .tar.gz suffix. Affected builds are 9.1.0cu.2350_B20230313 and 9.1.0cu.2415_B20250515; exposure requires router HTTP access and existing generated exports.

CVSS severity5.3
Medium
EPSS probability0.67%
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 TOTOLINK X5000R firmware allows remote attackers to read generated OpenVPN export files without authentication. The exportOvpn handler accepts ../ segments in the positional name or username field and resolves them with a forced .ovpn or .tar.gz suffix. Affected builds are 9.1.0cu.2350_B20230313 and 9.1.0cu.2415_B20250515; exposure requires router HTTP access and existing generated exports.

The record

CVE
CVE-2026-15204
Published
Jul 9, 2026
Updated
Jul 9, 2026
Vendor
TOTOLINK
Product
X5000R
Classifications
CWE-22, CAPEC-126, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 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=9.1.0cu.2350_B20230313
  2. Affected versionversion=9.1.0cu.2415_B20250515

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TOTOLINK · X5000Rversion=9.1.0cu.2350_B20230313; version=9.1.0cu.2415_B20250515

Published CVSS scores

4.3VulDBAV:N/AC:M/Au:N/C:P/I:N/A:N
5.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.5VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CAPEC-126Path 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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