CVE-2026-76427: A vulnerability in the offline profiler feed service of Cisco ISE could allow an authenticated, remote attacke

Routine

MEDIUM 4.9UPGRADE

CVE-2026-76427 is a medium-severity flaw (CVSS 4.9) affecting identity services engine. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability in the offline profiler feed service of Cisco ISE could allow an authenticated, remote attacker to read arbitrary files that are stored on an affected device. This vulnerability is due to the parsing of attacker-controlled feed metadata with an XML parser that does not disable external entity resolution. An attacker could exploit this vulnerability by uploading a crafted offline feed package through the administrative interface

Why this priority

No elevated risk signals yet

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	0.5% (top 60%)
CISA exploited list	No
Weakness	CWE-611
Published	2026-09-16
Last modified	2026-09-28

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

Last updated 2026-09-28 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-16 21:17 UTCPublished CVE record published
2026-09-28 13:01 UTCUpdated Record last modified

cisco identity services engine UPGRADE

Affected: >= 3.1.0 and < 3.3.0 · 3.3.0 patch1 · 3.3.0 patch10 · 3.3.0 patch11 · 3.3.0 patch2 · 3.3.0 patch3 · 3.3.0 patch4 · 3.3.0 patch5

Fixed in: 3.3.0

Safe to downgrade to: a release before 3.1.0

1. Check installed version

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

2. UPGRADE to 3.3.0 (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.

3. If no update is available yet, DOWNGRADE to a release before 3.1.0 (Debian / Ubuntu)

apt-cache madison identity-services-engine sudo apt install identity-services-engine=<VERSION_BEFORE_3.1.0> sudo apt-mark hold identity-services-engine

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list identity-services-engine sudo dnf downgrade identity-services-engine-<VERSION_BEFORE_3.1.0> sudo dnf versionlock add identity-services-engine

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2026-76427?

identity services engine: upgrade to 3.3.0. Exact commands for each OS are on this page.

Is CVE-2026-76427 being exploited?

CVE-2026-76427 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-2026-76427 affect?

CVE-2026-76427 affects identity services engine. Severity is medium (CVSS 4.9). A vulnerability in the offline profiler feed service of Cisco ISE could allow an authenticated, remote attacker to read arbitrary files that are stored on an affected device. This vulnerability is due to the parsing of attacker-controlle

How urgent is CVE-2026-76427?

Priority 27/100. No elevated risk signals yet.

Software pages

Cisco vulnerabilities · Cisco ISE vulnerabilities

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References

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