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Netvault Backup CVE-2018-1163

CRITICAL
Improper Authentication (CWE-287)
2018-02-08 zdi-disclosures@trendmicro.com
9.8
CVSS 3.0 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Authentication mechanism validation
MITRE ATT&CK

2 techniques across 2 tactics: Defense Evasion, Initial Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required.

Exploit ScenarioDerived

A remote attacker could bypass authentication mechanisms to gain unauthorized access by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet 16.3% exploitation probability (EPSS)

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AnalysisAI

This vulnerability allows remote attackers to bypass authentication on vulnerable installations of Quest NetVault Backup 11.2.0.13. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement multi-factor authentication, enforce strong password policies, use proven authentication frameworks.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Improper Authentication (CWE-287), which allows attackers to bypass authentication mechanisms to gain unauthorized access. This vulnerability allows remote attackers to bypass authentication on vulnerable installations of Quest NetVault Backup 11.2.0.13. The specific flaw exists within JSON RPC Request handling. By setting the checksession parameter to a specific value, it is possible to bypass authentication to critical functions. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-4752. Affected products include: Quest Netvault Backup.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionNVD

This vulnerability allows remote attackers to bypass authentication on vulnerable installations of Quest NetVault Backup 11.2.0.13. The specific flaw exists within JSON RPC Request handling. By setting the checksession parameter to a specific value, it is possible to bypass authentication to critical functions. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-4752.

Threat Intelligence Overview

EPSS Score
16.3%
Top 3% exploitable
Data Quality
2 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC No
EPSS 16.3%
Patch available No
Active threat No
Deciding rule
CRITICAL severity
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact· derived
Medium

Priority Score

65
Low Medium High Critical
KEV: 0
EPSS: +16
CVSS: +49
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)NVD

cpe:2.3:a:quest:netvault_backup:11.2.0.13:*:*:*:*:*:*:*
CVE-2015-5696 MEDIUM POC
5.0 Aug 14

Dell Netvault Backup before 10.0.5 allows remote attackers to cause a denial of service (crash) via a crafted request. R

CVE-2015-4067 CRITICAL
10.0 May 29

Integer overflow in the libnv6 module in Dell NetVault Backup before 10.0.5 allows remote attackers to execute arbitrary

CVE-2018-1161 CRITICAL
9.8 Feb 08

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Quest NetVault Backu

CVE-2026-9787 HIGH
8.8 Jun 25

Remote code execution in Quest NetVault Backup allows authenticated remote attackers - who can bypass the product's exis

CVE-2026-9786 HIGH
8.8 Jun 25

Remote code execution in Quest NetVault Backup arises through SQL injection in the NVBUDashboard component's JSON-RPC me

CVE-2026-9785 HIGH
8.8 Jun 25

Remote code execution in Quest NetVault Backup arises from a SQL injection flaw in the handling of NVBULibrarySlot JSON-

CVE-2026-9784 HIGH
8.8 Jun 25

SQL injection in Quest NetVault Backup's NVBULibraryPort JSON-RPC handler allows remote attackers to execute arbitrary c

CVE-2026-9783 HIGH
8.8 Jun 25

SQL injection leading to remote code execution affects Quest NetVault Backup, where the NVBURemovableMedia component fai

CVE-2026-9782 HIGH
8.8 Jun 25

Remote code execution in Quest NetVault Backup arises from SQL injection in the NVBUDeviceDrive JSON-RPC message handler

CVE-2026-9781 HIGH
8.8 Jun 25

Remote code execution in Quest NetVault Backup arises from SQL injection in the NVBURASDevice JSON-RPC message handler,

CVE-2026-7570 HIGH
8.8 Jun 25

SQL injection leading to remote code execution in Quest NetVault Backup allows attackers to run arbitrary code as the NE

CVE-2026-9780 HIGH
8.8 Jun 25

Authentication bypass via cross-site scripting in Quest NetVault Backup's addclient3 webpage allows remote attackers to

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