CVE-2026-20148: A vulnerability in Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to perform path t

Q: How do I fix CVE-2026-20148?

identity services engine: upgrade to 3.1; identity services engine passive identity connector: upgrade to 3.1.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-20148 being exploited?

CVE-2026-20148 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-20148 affect?

CVE-2026-20148 affects identity services engine, identity services engine passive identity connector. Severity is medium (CVSS 4.9). A vulnerability in Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to perform path traversal attacks on the underlying operating system and read arbitrary files. To exploit this vulnerability, the attacker must hav

Q: How urgent is CVE-2026-20148?

Priority 41/100. EPSS top 6%: very likely to be exploited

This month

MEDIUM 4.9UPGRADEUPGRADE

CVE-2026-20148 is a medium-severity flaw (CVSS 4.9) affecting identity services engine, identity services engine passive identity connector. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability in Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to perform path traversal attacks on the underlying operating system and read arbitrary files. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected syst

Why this priority

EPSS top 6%: very likely to be exploited

A fixed release or distro patch exists.

Risk facts

CVSS score	4.9 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	6.5% (top 6%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-04-15
Last modified	2026-10-26

Publisher (CNA): Cisco Systems, Inc. · Vendor: cisco

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-15 17:17 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

cisco identity services engine UPGRADE

Affected: < 3.1 · 3.1.0 · 3.1.0 patch1 · 3.1.0 patch10 · 3.1.0 patch2 · 3.1.0 patch3 · 3.1.0 patch4 · 3.1.0 patch5

Fixed in: 3.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy identity-services-engine || rpm -q identity-services-engine || identity-services-engine --version

2. UPGRADE to 3.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade identity-services-engine

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade identity-services-engine

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

cisco identity services engine passive identity connector UPGRADE

Affected: < 3.1.0 · 3.1.0 · 3.1.0 patch1 · 3.1.0 patch10 · 3.1.0 patch2 · 3.1.0 patch3 · 3.1.0 patch4 · 3.1.0 patch5

Fixed in: 3.1.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy identity-services-engine-passive-identity-connector || rpm -q identity-services-engine-passive-identity-connector || identity-services-engine-passive-identity-connector --version

2. UPGRADE to 3.1.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade identity-services-engine-passive-identity-connector

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade identity-services-engine-passive-identity-connector

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-20148?

identity services engine: upgrade to 3.1; identity services engine passive identity connector: upgrade to 3.1.0. Exact commands for each OS are on this page.

Is CVE-2026-20148 being exploited?

CVE-2026-20148 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-20148 affect?

CVE-2026-20148 affects identity services engine, identity services engine passive identity connector. Severity is medium (CVSS 4.9). A vulnerability in Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to perform path traversal attacks on the underlying operating system and read arbitrary files. To exploit this vulnerability, the attacker must hav

How urgent is CVE-2026-20148?

Priority 41/100. EPSS top 6%: very likely to be exploited

Software pages

Cisco vulnerabilities · Cisco ISE vulnerabilities

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References

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