zsadmin2025 ZS-Admin up to b52e14536d59fda11e56e2536a1c32e82a38cead com.zs.file.controller.SysFileController /api/system/file/upload File unrestricted upload

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.7$0-$5k1.22

Summaryinfo

A vulnerability, which was classified as critical, was found in zsadmin2025 ZS-Admin up to b52e14536d59fda11e56e2536a1c32e82a38cead. Affected is an unknown function of the file /api/system/file/upload of the component com.zs.file.controller.SysFileController. Executing a manipulation of the argument File can lead to unrestricted upload. This vulnerability is registered as CVE-2026-16451. It is possible to launch the attack remotely. Furthermore, an exploit is available. This product takes the approach of rolling releases to provide continious delivery. Therefore, version details for affected and updated releases are not available. The project was informed of the problem early through an issue report but has not responded yet.

Detailsinfo

A vulnerability has been found in zsadmin2025 ZS-Admin up to b52e14536d59fda11e56e2536a1c32e82a38cead and classified as critical. This vulnerability affects some unknown functionality of the file /api/system/file/upload of the component com.zs.file.controller.SysFileController. The manipulation of the argument file with an unknown input leads to a unrestricted upload vulnerability. The CWE definition for the vulnerability is CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is available at github.com. This vulnerability was named CVE-2026-16451. The exploitation appears to be easy. The attack can be initiated remotely. Technical details and also a public exploit are known. This vulnerability is assigned to T1608.002 by the MITRE ATT&CK project.

It is possible to download the exploit at github.com. It is declared as proof-of-concept. The project was informed of the problem early through an issue report but has not responded yet.

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

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Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
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: Unrestricted upload
CWE: CWE-434 / CWE-284 / 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

07/21/2026 Advisory disclosed
07/21/2026 +0 days VulDB entry created
07/21/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2026-16451 (🔒)
GCVE (CVE): GCVE-0-2026-16451
GCVE (VulDB): GCVE-100-380830
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 07/21/2026 11:00
Changes: 07/21/2026 11:00 (58)
Complete: 🔍
Submitter: cl0ney
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #858792: zsadmin ZS-Admin <=1.0.0 Unrestricted Upload (by cl0ney)

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