Nessus
CVE-2021-20099
MEDIUM
Vulnerability Assessment
| Impact | CVSS score of 6.7 (MEDIUM). Attack characteristics: local attack vector, low complexity, high privileges required, no user interaction not required. |
| Exploit ScenarioDerived | Successful exploitation could compromise the medium-severity affected system. |
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Alert meAnalysisAI
Nessus Agent 8.2.4 and earlier for Windows were found to contain multiple local privilege escalation vulnerabilities which could allow an authenticated, local administrator to run specific Windows. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
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Technical ContextAI · show details
Nessus Agent 8.2.4 and earlier for Windows were found to contain multiple local privilege escalation vulnerabilities which could allow an authenticated, local administrator to run specific Windows executables as the Nessus host. This is different than CVE-2021-20100. Affected products include: Tenable Nessus.
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Severity by source
AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
Nessus Agent 8.2.4 and earlier for Windows were found to contain multiple local privilege escalation vulnerabilities which could allow an authenticated, local administrator to run specific Windows executables as the Nessus host. This is different than CVE-2021-20100.
Threat Intelligence Overview
NVD
CVE.org
EPSS
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.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.
Affected Products (CPE)NVD
An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. Rated med
The BN_mod_sqrt() function, which computes a modular square root, contains a bug that can cause it to loop forever for n
The X509_V_FLAG_X509_STRICT flag enables additional security checks of the certificates present in a certificate chain.
The duration function in the moment package before 2.11.2 for Node.js allows remote attackers to cause a denial of servi
Insufficiently Protected Credentials: An authenticated user with debug privileges can retrieve stored Nessus policy cred
Simultaneous Multi-threading (SMT) in processors can enable local users to exploit software vulnerable to timing attacks
The /server/properties resource in Tenable Web UI before 2.3.5 for Nessus 5.2.3 through 5.2.7 allows remote attackers to
Vulnerability in Tenable Tenable.Io, Tenable Nessus, Tenable Security Center.Io: before Plugin Feed ID #202306261202 ; N
As part of our Security Development Lifecycle, a potential privilege escalation issue was identified internally. Rated h
A privilege escalation vulnerability was identified in Nessus versions 8.10.1 through 8.15.8 and 10.0.0 through 10.4.1.
An authenticated attacker could create an audit file that bypasses PowerShell cmdlet checks and executes commands with a
Authenticated SQL injection in Tenable Nessus lets any user with a valid low-privilege Nessus account read or modify dat
GitHub PoC
Exploit-DB