CVE-2026-20014

A vulnerability in the IKEv2 feature of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an authenticated, remote attacker with valid VPN user credentials to cause a DoS condition on an affected device that may also impact the availability of services to devices elsewhere in the network. This vulnerability is due to the improper processing of IKEv2 packets. An attacker could exploit this vulnerability by sending crafted, authenticated IKEv2 packets to an affected device. A successful exploit could allow the attacker to exhaust memory, causing the device to reload.

Published: 2026-03-04 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-20014 is rated Moderate Risk (44/100): CVSS High severity, with low exploitation likelihood (EPSS 0.17%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-20014

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-10 0.14% 0.17% +0.03%
2 2026-03-05 — 0.14% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-20014

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.7 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.1 4.0 [email protected]

Weakness enumeration for CVE-2026-20014

Affected software / configurations for CVE-2026-20014

Vendor Product Version Raw CPE
cisco adaptive_security_appliance_software >= 9.12.1, < 9.16.4.85 cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
cisco adaptive_security_appliance_software >= 9.17.1, < 9.18.4.66 cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
cisco adaptive_security_appliance_software >= 9.19.1, < 9.20.4 cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
cisco adaptive_security_appliance_software >= 9.22.1.1, < 9.22.2.9 cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
cisco adaptive_security_appliance_software >= 9.23.1, < 9.23.1.13 cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
cisco firepower_threat_defense_software >= 6.4.0, < 7.0.9 cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*
cisco firepower_threat_defense_software >= 7.1.0, < 7.2.11 cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*
cisco firepower_threat_defense_software >= 7.3.0, < 7.4.3 cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*
cisco firepower_threat_defense_software >= 7.6.0, < 7.6.4 cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*
cisco firepower_threat_defense_software >= 7.7.0, < 7.7.11 cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*

References for CVE-2026-20014

cvelogic Threat Intelligence