CVE-2026-20131
10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.0 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.0.1 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.1 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.1.0 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 6.4.0.13 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.1.1 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 6.4.0.14 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.1.0.1 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.2 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 6.4.0.15 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.0 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.2.1 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.3 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.1.0.2 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.0.1 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.4 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.1 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.5 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 6.4.0.16 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.3.0 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.2 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.3.1 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.3 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.1.0.3 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.3.1 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.4 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.6 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.4.1 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.5 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.3.1.1 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.4.0 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 6.4.0.17 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.6.1 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.5.1 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.4.1 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.6 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.4.1.1 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.6.2 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 6.4.0.18 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.7 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.5.2 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.3.1.2 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.8 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.6.0 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.4.2 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.8.1 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.6.3 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.4.2.1 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.9 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.7 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.7.0 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.4.2.2 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.10 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.6.1 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.4.2.3 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.8 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.6.2 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.7.10 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.10.1 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.0.8.1 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.6.2.1 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.2.10.2 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.7.10.1 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.4.2.4 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.4.3 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.7.11 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.6.4 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 10.0.0 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.4.4 | affected |
| Cisco | Cisco Secure Firewall Management Center (FMC) | 7.4.5 | affected |
Weaknesses
- CWE-502: Deserialization of Untrusted Data
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: active
- Automatable: yes
- Technical Impact: total
Additional References
- https://aws.amazon.com/blogs/security/amazon-threat-intelligence-teams-identify-interlock-ransomware-campaign-targeting-enterprise-firewalls/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20131
References
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