Secure Access
CVE-2026-0517
HIGH
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessCraft malformed network packet
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ExploitSend to Secure Access Server
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ExecutionTrigger parsing error
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ImpactServer process crashes
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V2 - Validation and Business Logic Resource consumption limits
MITRE ATT&CK
1 technique across 1 tactic: Impact The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | No special conditions — remote unauthenticated exploitation against default configurations of Secure Access Server versions prior to 14.20. |
| Impact | CVSS 7.5 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: None. User interaction: None. |
| Exploit ScenarioDerived | An attacker could exploit this vulnerability to compromise the affected system. |
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Alert meAnalysisAIv1 – Mar 12, 2026
Secure Access Server versions before 14.20 are vulnerable to a network-based denial-of-service attack where unauthenticated attackers can crash the server by sending specially crafted packets. This vulnerability requires no user interaction and is easily exploitable over the network, though no patch is currently available. Organizations running affected versions should implement network-level mitigations to restrict access to the vulnerable service.
Earlier versions of this analysis (1)
Denial-of-service vulnerability in versions of Secure Access Server prior to 14.20. An attacker can send a specially crafted packet to a server and cause the server to crash [CVSS 7.5 HIGH]
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-400 (Uncontrolled Resource Consumption). Affects Secure Access. CVE-2026-0517 is a denial-of-service vulnerability in versions of Secure Access Server prior to 14.20. An attacker can send a specially crafted packet to a server and cause the server to crash
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionCVE.org
Denial-of-service vulnerability in versions of Secure Access Server prior to 14.20. An attacker can send a specially crafted packet to a server and cause the server to crash
Executive ViewAI
Organizations using versions of Secure Access Server face notable risk from CVE-2026-0517, a resource exhaustion vulnerability rated CVSS 7.5. Exploitation could cause service disruption or denial of service, impacting availability for legitimate users. Organizations should apply vendor updates when available and consider compensating controls in the interim.
Apply vendor patch. If immediate patching is not feasible: (1) Implement network-level access controls to limit exposure; (2) Enable enhanced monitoring and alerting; (3) Apply principle of least privilege.
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
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)CVE.org
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GitHub PoC
Exploit-DB