Is CVE-2026-20148 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-20148 being exploited in the wild.

How severe is CVE-2026-20148?

Medium severity, with a CVSS score of 4.9, published 15 April 2026.

Which products and versions are affected?

Cisco Identity Services Engine < 3.1 Patch 11, 3.2 < Patch 10, 3.3 < Patch 11, 3.4 < Patch 6, 3.5 < Patch 3; Cisco ISE Passive Identity Connector < 3.1 Patch 11, 3.2 < Patch 10, 3.3 < Patch 11, 3.4 < Patch 6.

Is there a fix for CVE-2026-20148?

A patch was published on 2026-04-28: Updated fixed release availability information Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-20148 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-20148?

Check whether you run Cisco Identity Services Engine or Cisco ISE Passive Identity Connector at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-20148: Cisco ISE path traversal in underlying operating system

Q: Is there a fix for CVE-2026-20148?

A patch was published on 2026-04-28: Updated fixed release availability information Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-20148 attacked?

It is attacked over the network, in a network appliance.

Q: Am I affected by CVE-2026-20148?

Check whether you run Cisco Identity Services Engine or Cisco ISE Passive Identity Connector at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-20148 · Severity: medium · CVSS 4.9 · Published 2026-04-15

Cisco Identity Services Engine (ISE) is a security policy management platform used to control network access and provide visibility into users and devices. A vulnerability in this system could allow an authorized administrator to bypass security restrictions and read sensitive system files. This could lead to the exposure of confidential configuration data or system credentials, potentially compromising the overall security of the network infrastructure.

Technologies: Cisco Identity Services Engine, Cisco ISE Passive Identity Connector. Vendors: Cisco.

Quick answers

Is CVE-2026-20148 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-20148 being exploited in the wild.
How severe is CVE-2026-20148?: Medium severity, with a CVSS score of 4.9, published 15 April 2026.
Which products and versions are affected?: Cisco Identity Services Engine < 3.1 Patch 11, 3.2 < Patch 10, 3.3 < Patch 11, 3.4 < Patch 6, 3.5 < Patch 3; Cisco ISE Passive Identity Connector < 3.1 Patch 11, 3.2 < Patch 10, 3.3 < Patch 11, 3.4 < Patch 6.
Is there a fix for CVE-2026-20148?: A patch was published on 2026-04-28: Updated fixed release availability information Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-20148 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-20148?: Check whether you run Cisco Identity Services Engine or Cisco ISE Passive Identity Connector at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A path traversal vulnerability (CWE-22) exists in Cisco ISE and Cisco ISE-PIC due to improper validation of user-supplied input in HTTP requests. An authenticated, remote attacker with valid administrative credentials can exploit this by sending a crafted HTTP request to the affected system. Successful exploitation allows the attacker to traverse the file system and read arbitrary files on the underlying operating system. This vulnerability is tracked by Cisco Bug ID CSCws52717. Cisco has released software updates to address this issue; no workarounds are available.

Affected products

Cisco Identity Services Engine (ISE) < 3.1 Patch 11, 3.2 < Patch 10, 3.3 < Patch 11, 3.4 < Patch 6, 3.5 < Patch 3
Cisco ISE Passive Identity Connector (ISE-PIC) < 3.1 Patch 11, 3.2 < Patch 10, 3.3 < Patch 11, 3.4 < Patch 6

Timeline

2026-04-15: advisory: Initial public release by Cisco
2026-04-28: patched: Updated fixed release availability information

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-rce-traversal-8bYndVrZ

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