CVE-2025-20124
CVSS v3
7.2
HIGH
EPSS Score
18.5 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
A vulnerability in an API of Cisco ISE could allow an authenticated, remote attacker to execute arbitrary commands as the root user on an affected device. This vulnerability is due to insecure deserialization of user-supplied Java byte streams by the affected software. An attacker could exploit this vulnerability by sending a crafted serialized Java object to an affected API. A successful exploit could allow the attacker to execute arbitrary commands on the device and elevate privileges. Note: To successfully exploit this vulnerability, the attacker must have valid read-only administrative credentials. In a single-node deployment, new devices will not be able to authenticate during the reload time.
Technical details
- Published
- 2025-02-05
- Exploit-DB
- EDB-52396
Frequently asked questions
What is CVE-2025-20124?
A vulnerability in an API of Cisco ISE could allow an authenticated, remote attacker to execute arbitrary commands as the root user on an affected device. This vulnerability is due to insecure deserialization of user-supplied Java byte streams by the affected software. An attacker could exploit this vulnerability by sending a crafted serialized Java object to an affected API. A successful exploit could allow the attacker to execute arbitrary commands on the device and elevate privileges. Note: To successfully exploit this vulnerability, the attacker must have valid read-only administrative credentials. In a single-node deployment, new devices will not be able to authenticate during the reload time.
Is CVE-2025-20124 actively exploited?
Active exploitation of CVE-2025-20124 has not been confirmed. Its EPSS score was 18.5% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2025-20124?
CVE-2025-20124 has a CVSS v3 base score of 7.2 (HIGH severity).
Is CVE-2025-20124 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.
No credit card required · 500 free checks/month · Free API key
Other 2025 vulnerabilities worth triaging
Ranked by exploit probability (EPSS).
- CVE-2025-53770KEVMicrosoft SharePoint Server Remote Code Execution Vulnerability
- CVE-2025-49704KEVMicrosoft SharePoint Remote Code Execution Vulnerability
- CVE-2025-3248KEV
- CVE-2025-22457KEV
- CVE-2025-59287KEV
- CVE-2025-0282KEV
- CVE-2025-31161KEV
- CVE-2025-5777KEVNetScaler ADC and NetScaler Gateway - Insufficient input validation leading to memory overread