CVE-2026-20131
CISA 기관 조치 기한: 2026-03-22
Cisco Secure Firewall Management Center (FMC)
Qualys 위협 인텔 · 심각도 5/5 · QID 317769 · Cisco
공개 익스플로잇
실제 공격 관측
측면이동
쉬운 악용
대량 데이터 유출
서비스 거부
악성코드 연계
권한상승
원격코드실행
랜섬웨어 연계
CISA KEV
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.
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.
KEV 필수 조치: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
타임라인
- NVD 공개
- CISA KEV 등재(실제 악용 확인) 공개 후 15일
- CISA 기관 조치 기한 경과
날짜 정보 없는 신호: 랜섬웨어 캠페인 악용 공개 PoC 4건 실제 공격 관측
벡터: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
공개 익스플로잇 / PoC
- GitHub 공개 PoC 4건 — 대표 레포 ↗