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Opennds CVE-2024-25763

MEDIUM
Use After Free (CWE-416)
2024-02-26 cve@mitre.org
5.5
CVSS 3.1 · Vendor: mitre
View

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Memory lifecycle management
MITRE ATT&CK

2 techniques across 2 tactics: Execution, Privilege Escalation

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

Impact

CVSS score of 5.5 (MEDIUM). Attack characteristics: network attack vector, low complexity, low privileges required, user interaction required. Public proof-of-concept exploit code is available.

Exploit ScenarioDerived

A remote attacker could access freed memory to execute arbitrary code or crash the application by sending crafted requests to the affected application.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.5% exploitation probability (EPSS)

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AnalysisAI

openNDS 10.2.0 is vulnerable to Use-After-Free via /openNDS/src/auth.c. Rated medium severity (CVSS 5.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.

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 Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. openNDS 10.2.0 is vulnerable to Use-After-Free via /openNDS/src/auth.c. Affected products include: Opennds.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (mitre) PRIMARY 5.5 MEDIUM
AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L

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

CVSS VectorVendor: mitre

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

DescriptionCVE.org

openNDS 10.2.0 is vulnerable to Use-After-Free via /openNDS/src/auth.c.

Threat Intelligence Overview

EPSS Score
0.5%
Top 64% exploitable
Exploit
POC
Public exploit code exists
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 MEDIUM
CISA KEV No
Public POC Yes
EPSS 0.5%
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
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

48
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +28
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Use-after-free vulnerabilities occur when a program continues to access memory through a pointer after that memory has been deallocated.

Memory corruption occurs when a program writes data beyond the boundaries of allocated memory regions or accesses memory in unintended ways, violating the integrity of the process's address space.

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:opennds:opennds:10.2.0:*:*:*:*:*:*:*
CVE-2023-41101 CRITICAL
9.8 Nov 17

An issue was discovered in the captive portal in OpenNDS before version 10.1.3. Rated critical severity (CVSS 9.8), this

CVE-2023-38316 CRITICAL
9.8 Nov 17

An issue was discovered in OpenNDS Captive Portal before version 10.1.2. Rated critical severity (CVSS 9.8), this vulner

CVE-2026-38820 HIGH
8.3 Aug 28

Unauthenticated OS command injection in openNDS before 11.0.0 allows any adjacent-network attacker - such as an unprivil

CVE-2026-38822 HIGH
7.6 Aug 28

OS command injection in openNDS before 11.0.0 allows an authenticated captive portal user to execute arbitrary shell com

CVE-2023-41102 HIGH
7.5 Nov 17

An issue was discovered in the captive portal in OpenNDS before version 10.1.3. Rated high severity (CVSS 7.5), this vul

CVE-2023-38322 HIGH
7.5 Nov 17

An issue was discovered in OpenNDS Captive Portal before version 10.1.2. Rated high severity (CVSS 7.5), this vulnerabil

CVE-2023-38320 HIGH
7.5 Nov 17

An issue was discovered in OpenNDS Captive Portal before version 10.1.2. Rated high severity (CVSS 7.5), this vulnerabil

CVE-2023-38315 HIGH
7.5 Nov 17

An issue was discovered in OpenNDS Captive Portal before version 10.1.2. Rated high severity (CVSS 7.5), this vulnerabil

CVE-2023-38313 HIGH
7.5 Nov 17

An issue was discovered in OpenNDS Captive Portal before 10.1.2. Rated high severity (CVSS 7.5), this vulnerability is r

CVE-2026-38821 HIGH
7.1 Aug 28

Heap-based buffer overflow in openNDS before 11.0.0 allows an unauthenticated attacker positioned on the captive portal

CVE-2023-38314 MEDIUM
6.5 Nov 17

An issue was discovered in OpenNDS Captive Portal before version 10.1.2. Rated medium severity (CVSS 6.5), this vulnerab

CVE-2026-38819 MEDIUM
5.3 Aug 28

Memory exhaustion vulnerabilities in openNDS before 11.0.0 allow an unauthenticated attacker on the captive portal netwo

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