What is the CVSS score of CVE-2019-25434?

CVE-2019-25434 has a CVSS 4.0 base score of 6.7 (Medium). CVSS vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N. EPSS exploitation probability: 0.1%.

Is there a public PoC exploit available for CVE-2019-25434?

Yes, a public proof-of-concept exploit is available for CVE-2019-25434. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2019-25434?

Within 24 hours: Disable the registration feature or restrict network access to SpotAuditor to trusted networks only. Within 7 days: Deploy input validation rules via WAF or network appliance to block oversized payloads in registration fields, and identify all instances of SpotAuditor 5.3.1.0 across the organization. Within 30 days: Contact the vendor for patch availability and timeline; evaluate alternative solutions if patches remain unavailable, and implement application-level input length limits as a compensating control.

Spotauditor CVE-2019-25434

MEDIUM

Stack-based Buffer Overflow (CWE-121)

2026-02-20 disclosure@vulncheck.com

Buffer Overflow Denial Of Service Stack Overflow Spotauditor Nsasoft

6.7

CVSS 4.0 · Vendor: vulncheck

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Vulnerability Assessment

Weakness	CWE CWE-121 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Stack buffer bounds checking MITRE ATT&CK 1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS 7.5 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: None. User interaction: None. Exploitation no authentication required. Public exploit/POC available.
Exploit ScenarioDerived	An attacker without authentication could exploit this vulnerability to crash the application by submitting excessive data in the registration name fiel.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

RemediationAI

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

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

Classified as CWE-121 (Stack-based Buffer Overflow). Affects Spotauditor. SpotAuditor 5.3.1.0 contains a denial of service vulnerability that allows unauthenticated attackers to crash the application by submitting excessive data in the registration name field. Attackers can enter a large string of characters (5000 bytes or more) in the name field during registration to trigger an unhandled exception that crashes the application.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (vulncheck) PRIMARY 6.7 MEDIUM

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (vulncheck) · only source for this CVE.

CVSS VectorVendor: vulncheck

Attack Vector

Local

Attack Complexity

Low

Attack Requirements

None

Privileges Required

None

User Interaction

Active

Vulnerable system: Confidentiality

None

Vulnerable system: Integrity

None

Vulnerable system: Availability

High

Subsequent system: Confidentiality

None

Subsequent system: Integrity

None

Subsequent system: Availability

None

Lifecycle Timeline

Severity Changed

Jun 29, 2026 - 18:37 NVD

HIGH MEDIUM

CVSS changed

Jun 29, 2026 - 18:37 NVD

7.5 (HIGH) 6.7 (MEDIUM)

PoC Detected

Mar 05, 2026 - 01:05 vuln.today

Public exploit code

CVE Published

Feb 20, 2026 - 23:16 nvd

HIGH 7.5

DescriptionCVE.org

SpotAuditor 5.3.1.0 contains a denial of service vulnerability that allows unauthenticated attackers to crash the application by submitting excessive data in the registration name field. Attackers can enter a large string of characters (5000 bytes or more) in the name field during registration to trigger an unhandled exception that crashes the application.

Executive ViewAI

Why It Matters

SpotAuditor 5.3.1.0 is vulnerable to denial of service attacks that can crash the application without authentication. Any user with network access to the application can exploit this vulnerability, disrupting operations and potentially affecting customer-facing services. Immediate mitigation is required given the public availability of exploit code.

Business Impact: High

Compensating Controls

Implement network segmentation to restrict access to SpotAuditor to authorized users only; deploy Web Application Firewall (WAF) rules to block POST requests with excessive payload sizes to the registration endpoint; disable the registration feature if not critical to operations; implement rate limiting on registration endpoints; monitor application logs for DoS attempts; consider disabling SpotAuditor until a patch is released if the application is business-critical.

Threat Intelligence Overview

EPSS Score

0.1%

Top 72% exploitable

Exploit

POC

Public exploit code exists

Data Quality

4 sources

Confidence: Medium

NVD

CVE.org

EPSS

Exploit-DB

VulDB

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 MEDIUM

CISA KEV No

Public POC Yes

EPSS 0.1%

Patch available No

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

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

Poc

System Exposure· derived

Small

Automatable· derived

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +34

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Stack-based Buffer Overflow HIGH

A stack-based buffer overflow occurs when a program writes more data to a buffer located on the stack than it was allocated to hold.

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.