CVE-2025-8756Public exploitNetwork attack vector

Privilege escalation via unnormalized semicolon path

Published Aug 9, 2025 · Updated Aug 12, 2025

Improper authorization in TDuck 5.0 and 5.1 allows remote authenticated users to access administrator-only management APIs. AuthorizationInterceptor.preHandle compares the raw request URI with literal sensitive paths without normalization, so a semicolon-modified path evades the check. A normal user account is required; the demonstrated result is access to sensitive management resources, with no published evidence of full system takeover.

CVSS severity6.3
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Improper authorization in TDuck 5.0 and 5.1 allows remote authenticated users to access administrator-only management APIs. AuthorizationInterceptor.preHandle compares the raw request URI with literal sensitive paths without normalization, so a semicolon-modified path evades the check. A normal user account is required; the demonstrated result is access to sensitive management resources, with no published evidence of full system takeover.

The record

CVE
CVE-2025-8756
Published
Aug 9, 2025
Updated
Aug 12, 2025
Vendor
TDuckCloud
Product
TDuck
Classifications
CWE-285, CWE-266, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=5.0
  2. Affected versionversion=5.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

TDuckCloud · TDuckversion=5.0; version=5.1

Published CVSS scores

6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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

Weakness, pattern, technique

CWE-285Improper Authorization
CWE-266Incorrect Privilege Assignment
T1068Exploitation for Privilege Escalation

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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