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Net CVE-2024-57854

CRITICAL
Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) (CWE-338)
2026-03-05 9b29abf9-4ab0-4765-b253-1875cd9b441e
9.1
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A04:2025 - Cryptographic Failures
ASVS 5.0
V11 - Cryptography Cryptographic PRNG selection
Impact

CVSS 9.1.

Exploit ScenarioDerived

Predict monitoring tokens.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
Patch available 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Weak PRNG in Net::NSCA::Client through 0.009002 for Perl. Patch available.

Earlier versions of this analysis (1)
v1 Mar 12, 2026 - 22:06 CVSS 9.1

Weak random in Net::NSCA::Client.

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Technical ContextAI · show details

CWE-338.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 9.1 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

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
None

Lifecycle Timeline

2
Patch released
Mar 09, 2026 - 14:58 nvd
Patch available
CVE Published
Mar 05, 2026 - 03:15 nvd
CRITICAL 9.1

DescriptionCVE.org

Net::NSCA::Client versions through 0.009002 for Perl uses a poor random number generator.

Version v0.003 switched to use Data::Rand::Obscure instead of Crypt::Random for generation of a random initialisation vectors.

Data::Rand::Obscure uses Perl's built-in rand() function, which is not suitable for cryptographic functions.

Executive ViewAI

Why It Matters

Net::NSCA::Client, a Perl monitoring library used in network monitoring infrastructure, contains a critical vulnerability in its random number generation that could allow attackers to predict encryption keys and compromise monitoring data integrity. Organizations using this library for NSCA monitoring communications face potential unauthorized access to sensitive system monitoring information and could be unable to trust the integrity of their monitoring alerts.

Business Impact: High
Compensating Controls

Apply vendor patch. For systems where immediate patching is not possible: disable NSCA monitoring temporarily, isolate NSCA communication to trusted networks only via network segmentation, and implement enhanced monitoring and logging of NSCA client communications to detect anomalous activity.

Threat Intelligence Overview

EPSS Score
0.0%
Top 98% exploitable
Data Quality
3 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 0.0%
Patch available Yes
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
High

Priority Score

46
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +46
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)CVE.org

cpe:2.3:a:dougdude:net\:\:nsca\:\:client:*:*:*:*:*:perl:*:*

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