AEGLIX vulnerability intelligence
CVE-2026-20131
CRITICAL · CVSS 10.0 · Analyzed
Published: 2026-03-04 · Updated: 2026-06-17 · Source: NVD
Vulnerability overview
A vulnerability in the web-based management interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to execute arbitrary Java code as root on an affected device. This vulnerability is due to insecure deserialization of a user-supplied Java byte stream. An attacker could exploit this vulnerability by sending a crafted serialized Java object to the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary code on the device and elevate privileges to root. Note: If the FMC management interface does not have public internet access, the attack surface that is associated with this vulnerability is reduced.
Severity and scoring
- CVSS score
- 10.0 · CRITICAL
- CVSS version
- 3.1
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Weaknesses
- CWE-502
CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.
Known exploitation and remediation
Listed in CISA’s Known Exploited Vulnerabilities catalog.
- Affected product
- Cisco · Secure Firewall Management Center (FMC)
- Added to catalog
- 2026-03-19
- Required action
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- CISA remediation due date
- 2026-03-22
CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.
Verify affected versions and patch availability in the vendor advisory before making changes.
Affected products and versions
cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0.13:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0.14:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0.15:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0.16:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0.17:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0.18:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.0.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.0.0.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.0.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.0.1.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.0.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.0.2.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.0.3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.0.4:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.0.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.0.6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.0.6.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.0.6.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.0.6.3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.0.7:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.0.8:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.0.8.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.1.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.2.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.2.0.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.2.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.2.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.2.3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.2.3.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.2.4:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.2.4.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.2.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.2.5.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.2.5.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.2.6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.2.7:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.2.8:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.2.8.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.2.9:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.2.10:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.2.10.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.2.10.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.3.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.3.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.3.1.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.3.1.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.4.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.4.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.4.1.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.4.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.4.2.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.4.2.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.4.2.3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.4.2.4:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.4.3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.4.4:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.4.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.6.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.6.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.6.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.6.2.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.6.3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.6.4:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.7.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.7.10:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.7.10.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:7.7.11:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_management_center:10.0.0:*:*:*:*:*:*:*
These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.
Advisories and references
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-rce-NKhnULJh
Vendor Advisory
- https://aws.amazon.com/blogs/security/amazon-threat-intelligence-teams-identify-interlock-ransomware-campaign-targeting-enterprise-firewalls/
Technical Description
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20131
US Government Resource