CVE-2026-20103 - Vulnerability Analysis
HighCVSS: 8.6Last Updated: March 5, 2026
Cisco Secure Firewall ASA & FTD - Denial of Service
Overview
Cisco Secure Firewall ASA and FTD Software contain a denial of service vulnerability caused by unvalidated user input in the Remote Access SSL VPN functionality, letting unauthenticated remote attackers exhaust device memory and disrupt new VPN connections, exploit requires sending crafted packets.
Severity & Score
Impact
Unauthenticated remote attackers can cause denial of service by exhausting device memory, disrupting new VPN connections and temporarily affecting the web interface responsiveness.
Mitigation
Update to the latest available version of Cisco Secure Firewall ASA and FTD Software.
Social Media Activity(2 posts)
š New security advisory: CVE-2026-20103 affects multiple systems. ā¢ Impact: Significant security breach potential ā¢ Risk: Unauthorized access or data exposure ā¢ Mitigation: Apply patches within 24-48 hours Full breakdown: https://yazoul.net/advisory/cve/cve-2026-20103 #Cybersecurity #SecurityPatching #HackerNews
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š CVE-2026-20103 - High (8.6) A vulnerability in the Remote Access SSL VPN functionality of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to exhaust device memo... š https://www.thehackerwire.com/vulnerability/CVE-2026-20103/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack
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Details
- CVE ID
- CVE-2026-20103
- Severity
- High
- CVSS Score
- 8.6
- Type
- denial_of_service
- Status
- unconfirmed
- EPSS
- 5.0%
- Social Posts
- 2
CWE
- CWE-770
CVSS Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H