CVE-2026-20131CRITICAL· 10.0MITRENVD대응게시일: 2026. 03. 04.수정일: 2026. 03. 25.CNA: psirt@cisco.comAnalyzed

A vulnerability in the web-based management interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticat

Deserialization

위협 신호 · CVSS · EPSS · KEV

즉시 패치· 실측 악용 확인 · KEV 등재

CVSS

10.0critical

이론적 심각도 점수

EPSS

28.2%상위 2.1%

30일 내 악용 확률 예측

KEV

등재됨

등재일 2026. 03. 19.

패치 기한 2026. 03. 22.

권장 대응 기한3일 이내+ 침해 포렌식CISA SSVC 기준

즉시 패치 + 침해 여부 포렌식 분석

KEV 악용자동화 가능완전 장악외부 노출· KEV 등재 · 자동화 가능 · 완전 장악 · 외부 노출

CVSS 벡터 · 메트릭

악용 경로

공격 벡터네트워크

공격 복잡도낮음

필요 권한불필요

사용자 상호작용불필요

범위변경

영향

기밀성 영향높음

무결성 영향높음

가용성 영향높음

버전별 점수

CVSS 3.110.0CRITICAL· 악용성 3.9· 영향도 6

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

약점 (CWE)

CWE-502
신뢰할 수 없는 데이터 역직렬화 — 조작된 객체 역직렬화로 코드 실행 위험.

상세 설명

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.

AI 심층 분석

공격 시나리오 · 재현 가능한 PoC 페이로드 · 즉시 적용 가능한 차단 패치를 한 번에 받아 보세요. 보안 운영팀이 그대로 점검·티켓팅에 쓸 수 있는 형태로 정리해 드립니다.

영향받는 제품·버전

cisco secure_firewall_management_center
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영향받는 구성 (CPE) 60

cisco secure_firewall_management_center 6.4.0.13cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0.13:*:*:*:*:*:*:*
cisco secure_firewall_management_center 6.4.0.14cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0.14:*:*:*:*:*:*:*
cisco secure_firewall_management_center 6.4.0.15cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0.15:*:*:*:*:*:*:*
cisco secure_firewall_management_center 6.4.0.16cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0.16:*:*:*:*:*:*:*
cisco secure_firewall_management_center 6.4.0.17cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0.17:*:*:*:*:*:*:*
cisco secure_firewall_management_center 6.4.0.18cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0.18:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.0.0cpe:2.3:a:cisco:secure_firewall_management_center:7.0.0:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.0.0.1cpe:2.3:a:cisco:secure_firewall_management_center:7.0.0.1:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.0.1cpe:2.3:a:cisco:secure_firewall_management_center:7.0.1:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.0.1.1cpe:2.3:a:cisco:secure_firewall_management_center:7.0.1.1:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.0.2cpe:2.3:a:cisco:secure_firewall_management_center:7.0.2:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.0.2.1cpe:2.3:a:cisco:secure_firewall_management_center:7.0.2.1:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.0.3cpe:2.3:a:cisco:secure_firewall_management_center:7.0.3:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.0.4cpe:2.3:a:cisco:secure_firewall_management_center:7.0.4:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.0.5cpe:2.3:a:cisco:secure_firewall_management_center:7.0.5:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.0.6cpe:2.3:a:cisco:secure_firewall_management_center:7.0.6:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.0.6.1cpe:2.3:a:cisco:secure_firewall_management_center:7.0.6.1:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.0.6.2cpe:2.3:a:cisco:secure_firewall_management_center:7.0.6.2:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.0.6.3cpe:2.3:a:cisco:secure_firewall_management_center:7.0.6.3:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.0.7cpe:2.3:a:cisco:secure_firewall_management_center:7.0.7:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.0.8cpe:2.3:a:cisco:secure_firewall_management_center:7.0.8:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.0.8.1cpe:2.3:a:cisco:secure_firewall_management_center:7.0.8.1:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.1.0cpe:2.3:a:cisco:secure_firewall_management_center:7.1.0:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.1.0.1cpe:2.3:a:cisco:secure_firewall_management_center:7.1.0.1:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.1.0.2cpe:2.3:a:cisco:secure_firewall_management_center:7.1.0.2:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.1.0.3cpe:2.3:a:cisco:secure_firewall_management_center:7.1.0.3:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.2.0cpe:2.3:a:cisco:secure_firewall_management_center:7.2.0:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.2.0.1cpe:2.3:a:cisco:secure_firewall_management_center:7.2.0.1:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.2.1cpe:2.3:a:cisco:secure_firewall_management_center:7.2.1:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.2.2cpe:2.3:a:cisco:secure_firewall_management_center:7.2.2:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.2.3cpe:2.3:a:cisco:secure_firewall_management_center:7.2.3:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.2.3.1cpe:2.3:a:cisco:secure_firewall_management_center:7.2.3.1:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.2.4cpe:2.3:a:cisco:secure_firewall_management_center:7.2.4:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.2.4.1cpe:2.3:a:cisco:secure_firewall_management_center:7.2.4.1:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.2.5cpe:2.3:a:cisco:secure_firewall_management_center:7.2.5:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.2.5.1cpe:2.3:a:cisco:secure_firewall_management_center:7.2.5.1:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.2.5.2cpe:2.3:a:cisco:secure_firewall_management_center:7.2.5.2:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.2.6cpe:2.3:a:cisco:secure_firewall_management_center:7.2.6:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.2.7cpe:2.3:a:cisco:secure_firewall_management_center:7.2.7:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.2.8cpe:2.3:a:cisco:secure_firewall_management_center:7.2.8:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.2.8.1cpe:2.3:a:cisco:secure_firewall_management_center:7.2.8.1:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.2.9cpe:2.3:a:cisco:secure_firewall_management_center:7.2.9:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.2.10cpe:2.3:a:cisco:secure_firewall_management_center:7.2.10:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.2.10.1cpe:2.3:a:cisco:secure_firewall_management_center:7.2.10.1:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.2.10.2cpe:2.3:a:cisco:secure_firewall_management_center:7.2.10.2:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.3.0cpe:2.3:a:cisco:secure_firewall_management_center:7.3.0:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.3.1cpe:2.3:a:cisco:secure_firewall_management_center:7.3.1:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.3.1.1cpe:2.3:a:cisco:secure_firewall_management_center:7.3.1.1:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.3.1.2cpe:2.3:a:cisco:secure_firewall_management_center:7.3.1.2:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.4.0cpe:2.3:a:cisco:secure_firewall_management_center:7.4.0:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.4.1cpe:2.3:a:cisco:secure_firewall_management_center:7.4.1:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.4.1.1cpe:2.3:a:cisco:secure_firewall_management_center:7.4.1.1:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.4.2cpe:2.3:a:cisco:secure_firewall_management_center:7.4.2:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.4.2.1cpe:2.3:a:cisco:secure_firewall_management_center:7.4.2.1:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.4.2.2cpe:2.3:a:cisco:secure_firewall_management_center:7.4.2.2:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.4.2.3cpe:2.3:a:cisco:secure_firewall_management_center:7.4.2.3:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.4.2.4cpe:2.3:a:cisco:secure_firewall_management_center:7.4.2.4:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.4.3cpe:2.3:a:cisco:secure_firewall_management_center:7.4.3:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.4.4cpe:2.3:a:cisco:secure_firewall_management_center:7.4.4:*:*:*:*:*:*:*
cisco secure_firewall_management_center 7.4.5cpe:2.3:a:cisco:secure_firewall_management_center:7.4.5:*:*:*:*:*:*:*

참고 자료 3

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

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