CRITICALCVSS 10.0Actively exploited · CISA KEV since 2026-03-19Vulnerability

CVE-2026-20131

Cisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control (SCC) Firewall Management contain a deserialization of untrusted data vulnerability in the web-based management interface that could allow an unauthenticated, remote attacker to execute arbitrary Java code as root on an affected device.

Properties

Euvd product
Cisco Secure Firewall Management Center (FMC)
Vulnerability name
Cisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control (SCC) Firewall Management Deserialization of Untrusted Data Vulnerability
First seen
2026-08-14T03:55:24+00:00
Cvss score
10
Epss score
0.43166
Last seen
2026-10-19T12:00:27+00:00
Due date
2026-03-22
Euvd assigner
cisco
Retrieved at
2026-10-21T01:24:49+00:00
Exploited euvd since
2026-03-19T00:00:00+00:00
Src batch id
epss_history-20261020T103617Z-728ddd
Source url
https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
Date added
2026-03-19
Score
10
Euvd base score version
3.1
Fetched at
2026-10-20T10:36:20+00:00
Euvd vendor
Cisco
Cvss vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
In Signal since
initial import (Sep 2026)
Euvd base score
10

Related Entities (77 · showing 26)

AFFECTS_PRODUCT (71 · showing 20)

→[Product]cpe:2.3:a:cisco:secure_firewall_management_center:7.4.1:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_firewall_management_center:10.0.0:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_firewall_management_center:7.7.10:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_firewall_management_center:7.2.1:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_firewall_management_center:7.2.5.2:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_firewall_management_center:7.4.2:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_firewall_management_center:7.2.3:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_firewall_management_center:7.2.5.1:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_firewall_management_center:7.6.1:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_firewall_management_center:7.4.3:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_firewall_management_center:7.2.8:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_firewall_management_center:7.7.10.1:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_firewall_management_center:7.1.0.2:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_firewall_management_center:7.4.2.4:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_firewall_management_center:7.1.0.1:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_firewall_management_center:7.2.5:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_firewall_management_center:7.7.0:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_firewall_management_center:7.6.2:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_firewall_management_center:7.4.2.3:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_firewall_management_center:7.2.2:*:*:*:*:*:*:*

MENTIONED_IN (3)

→[Campaign]March 2026 CVE Landscape: 31 High-Impact Vulnerabilities Identified, Interlock Ransomware Group Exploits Cisco FMC Zero-Day
→[Campaign]CVE-2026-88771: Inside the Exploitation of a Critical NetScaler RCE Vulnerability
→[Campaign]Interlock and Rhysida within the Ransomware Ecosystem

DESCRIBES (1)

←[KEVEntry]Cisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control (SCC) Firewall Management Deserialization of Untrusted Data Vulnerability

HAS_WEAKNESS (1)

→[Weakness]Deserialization of Untrusted Data

INVOLVES (1)

←[Signal]kev_added · 2026-03-19

Explore deeper with Ninja Signal's threat intelligence graph

Search in SpektrOpen Signal Desktop
CVE-2026-20131 (CVSS 10) — Ninja Signal Threat Intelligence | Ninja Signal