Identity Services Engine vulnerabilitiesAnd the versions its exploited flaws hit.
Identity Services Engine is made by Cisco. We track 149 published vulnerabilities listed under that exact name, across 111 versions. 3 of them are on the list of flaws known to be exploited, the newest added on 28 July 2025. Cisco lists newer releases under their own names, such as Identity Services Engine Software, so check those pages too.
The most recent Identity Services Engine flaw added to the known-exploited list is CVE-2025-20281, on 28 July 2025. We keep watching the known-exploited list.
Is Identity Services Engine listed under other names? Yes.
Cisco also lists Identity Services Engine under more specific names, such as Identity Services Engine Software and Identity Services Engine Passive Identity Connector. Flaws listed only under those names are counted on their own pages, not here. If you run one of these, open its page for its own exploited flaws.
Which versions of Identity Services Engine do the exploited flaws hit?
Each exploited flaw lists the versions it affects, usually as ranges. "before 2.4.0" means every version up to, but not including, 2.4.0. Find your version, then patch.
- CVE-2025-20281Exploited list, 28 Jul 2025
Cisco Identity Services Engine Injection Vulnerability
3.3.03.3.0-patch13.3.0-patch23.3.0-patch33.3.0-patch43.3.0-patch53.3.0-patch63.4.0 - CVE-2025-20337Exploited list, 28 Jul 2025
Cisco Identity Services Engine Injection Vulnerability
3.3.03.3.0-patch13.3.0-patch23.3.0-patch33.3.0-patch43.3.0-patch53.3.0-patch63.4.0 - CVE-2021-44228Exploited list, 10 Dec 2021
Apache Log4j2 Remote Code Execution Vulnerability
before 2.4.02.4.0003.000(000.458)003.001(000.518)003.002(000.116)
Which Identity Services Engine vulnerabilities are being exploited?
3 flaws are on the government list of vulnerabilities known to be exploited. These are the ones criminals are using now, so they go first, whatever their severity score says.
- 10.0Cisco Identity Services Engine Injection Vulnerability
Cisco Identity Services Engine contains an injection vulnerability in a specific API of Cisco ISE and Cisco ISE-PIC due to insufficient validation of user-supplied input allowing an attacker to exploit this...
- 10.0Cisco Identity Services Engine Injection Vulnerability
Cisco Identity Services Engine contains an injection vulnerability in a specific API of Cisco ISE and Cisco ISE-PIC due to insufficient validation of user-supplied input allowing an attacker to exploit this...
- 10.0Apache Log4j2 Remote Code Execution Vulnerability
Apache Log4j2 contains a vulnerability where JNDI features do not protect against attacker-controlled JNDI-related endpoints, allowing for remote code execution.
Which Identity Services Engine flaws are most likely to be used?
Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.
- 97%
A vulnerability in a specific API of Cisco ISE and Cisco ISE-PIC could allow an unauthenticated, remote attacker to execute arbitrary code on the underlying operating system as root.
- 65%
A vulnerability in a specific API of Cisco ISE and Cisco ISE-PIC could allow an unauthenticated, remote attacker to execute arbitrary code on the underlying operating system as root.
- 31%CVE-2022-20964High
A vulnerability in the web-based management interface of Cisco Identity Services Engine could allow an authenticated, remote attacker to inject arbitrary commands on the underlying operating system.
- 28%CVE-2022-20966Medium
A vulnerability in the web-based management interface of Cisco Identity Services Engine could allow an authenticated, remote attacker to conduct cross-site scripting attacks against other users of the application...
- 17%CVE-2025-20124Critical
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.
- 15%CVE-2025-20125Critical
A vulnerability in an API of Cisco ISE could allow an authenticated, remote attacker with valid read-only credentials to obtain sensitive information, change node configurations, and restart the node.
- 5.5%CVE-2017-6747Critical
A vulnerability in the authentication module of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to bypass local authentication.
- 3.3%CVE-2016-9198High
A vulnerability in the Active Directory integration component of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to perform a denial of service (DoS) attack.
- 2.6%CVE-2018-0213High
A vulnerability in the credential reset functionality for Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to gain elevated privileges.
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1 flaw being exploited affects software Acme tracks
Cisco Identity Services Engine contains an injection vulnerability in a specific API of Cisco ISE and Cisco ISE-PIC due to insufficient validation of user-supplied input allowing an attacker to exploit this vulnerability by submitting a crafted API request. Successful exploitation could allow an attacker to perform remote code execution and obtaining root privileges on an affected device.
- Matched to
- Identity Services Engine on Acme's software list
- What to do
- Patch first, then check for signs of use
Sent to the alert recipients Acme chose. Also in the app and to Acme's webhook.
We track 149 published vulnerabilities listed under the name Identity Services Engine, across 111 versions. The most recent Identity Services Engine flaw added to the known-exploited list is CVE-2025-20281, on 28 July 2025.
3 are on the list of flaws known to be exploited. The most recently added are CVE-2025-20281, CVE-2025-20337 and CVE-2021-44228.
Cisco also lists Identity Services Engine under more specific names, such as Identity Services Engine Software and Identity Services Engine Passive Identity Connector. Flaws listed only under those names are counted on their own pages, not here. Open the release you run to see its own list.
Each flaw names its own versions, usually as ranges. The newest, CVE-2025-20281, affects 3.3.0, 3.3.0-patch1, 3.3.0-patch2, 3.3.0-patch3 and more. The versions for every exploited flaw are listed on this page.
Create a EdgeProtect account and track Identity Services Engine. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.