TOTOLINK CP450 4.1.0cu.747 vsftpd /etc/vsftpd.conf least privilege violation

CVSS Meta Temp Score
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CTI Interest Score
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3.9$0-$5k2.76-

Summaryinfo

A vulnerability described as critical has been identified in TOTOLINK CP450 4.1.0cu.747. This issue affects some unknown processing of the file /etc/vsftpd.conf of the component vsftpd. Such manipulation leads to least privilege violation. This vulnerability is traded as CVE-2026-11554. The attack may be launched remotely. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in TOTOLINK CP450 4.1.0cu.747. Affected by this issue is an unknown code block of the file /etc/vsftpd.conf of the component vsftpd. The manipulation with an unknown input leads to a least privilege violation vulnerability. Using CWE to declare the problem leads to CWE-272. The elevated privilege level required to perform operations such as chroot() should be dropped immediately after the operation is performed. Impacted is integrity.

The advisory is shared for download at notion.so. This vulnerability is handled as CVE-2026-11554. The exploitation is known to be easy. The attack may be launched remotely. Technical details as well as a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1068.

The exploit is available at notion.so. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Least privilege violation
CWE: CWE-272 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/08/2026 Advisory disclosed
06/08/2026 +0 days VulDB entry created
06/08/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: totolink.net

Advisory: notion.so
Status: Not defined

CVE: CVE-2026-11554 (🔒)
GCVE (CVE): GCVE-0-2026-11554
GCVE (VulDB): GCVE-100-369164
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 06/08/2026 07:50
Changes: 06/08/2026 07:50 (55)
Complete: 🔍
Submitter: L-14
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #834821: TOTOLink CP450 V4.1.0cu.747 Misconfiguration (by L-14)

Once again VulDB remains the best source for vulnerability data.

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