CVE-2026-20050

MEDIUM EPSS 29.6%
Published Mar 4, 20263mo ago · Modified Apr 16, 20262mo ago
6.8 CVSS 3.1
Medium
Find Similar
Published Mar 4, 2026 3mo ago
Last Modified Apr 16, 2026 2mo ago

Description

A vulnerability in the Do Not Decrypt exclusion feature of the SSL decryption feature of Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper memory management during the inspection of TLS 1.2 encrypted traffic. An attacker could exploit this vulnerability by sending crafted TLS 1.2 encrypted traffic through an affected device. A successful exploit could allow the attacker to cause a reload of an affected device. Note: This vulnerability only affects traffic that is encrypted by TLS 1.2. Other versions of TLS are not affected.

CVSS Details

Base Score
6.8
Exploitability
2.2
Impact
4.0
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Changed
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
29.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-404

Affected Products 4

VendorProductVersionRange
ciscofirepower_threat_defense_software*≥7.1.0  –  <7.2.11
ciscofirepower_threat_defense_software*≥7.3.0  –  <7.4.4
ciscofirepower_threat_defense_software*≥7.6.0  –  <7.6.4
ciscofirepower_threat_defense_software*≥7.7.0  –  <7.7.11

References 1

  • sec.cloudapps.cisco.com https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-dnd-dos-bpEcg7B7
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.