CVE-2026-20191: A vulnerability in Cisco Catalyst Center could allow an unauthenticated, remote attacker to read arbitrary fil

Q: How do I fix CVE-2026-20191?

catalyst center: upgrade to 3.1.6-75524.200; catalyst center global manager: upgrade to 1.4.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-20191 being exploited?

CVE-2026-20191 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-2026-20191 affect?

CVE-2026-20191 affects catalyst center, catalyst center global manager. Severity is high (CVSS 7.5). A vulnerability in Cisco Catalyst Center could allow an unauthenticated, remote attacker to read arbitrary files from a restricted container. This vulnerability is due to insufficient validation of user-supplied input. An attacker

Q: How urgent is CVE-2026-20191?

Priority 44/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADEUPGRADE

CVE-2026-20191 is a high-severity flaw (CVSS 7.5) affecting catalyst center, catalyst center global manager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability in Cisco Catalyst Center could allow an unauthenticated, remote attacker to read arbitrary files from a restricted container.  This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to read arbitrary files from a restricted container of the affected device

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 49%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-07-01
Last modified	2026-10-25

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

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-01 17:16 UTCPublished CVE record published
2026-10-25 17:10 UTCUpdated Record last modified

cisco catalyst center UPGRADE

Affected: >= 2.3.7.0 and <= 2.3.7.11 · >= 3.1.3 and < 3.1.6-75524.200

Fixed in: 3.1.6-75524.200

Safe to downgrade to: a release before 2.3.7.0

1. Check installed version

apt-cache policy catalyst-center || rpm -q catalyst-center || catalyst-center --version

2. UPGRADE to 3.1.6-75524.200 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade catalyst-center

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade catalyst-center

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 2.3.7.0 (Debian / Ubuntu)

apt-cache madison catalyst-center sudo apt install catalyst-center=<VERSION_BEFORE_2.3.7.0> sudo apt-mark hold catalyst-center

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

dnf --showduplicates list catalyst-center sudo dnf downgrade catalyst-center-<VERSION_BEFORE_2.3.7.0> sudo dnf versionlock add catalyst-center

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.

cisco catalyst center global manager UPGRADE

Affected: < 1.4.1

Fixed in: 1.4.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy catalyst-center-global-manager || rpm -q catalyst-center-global-manager || catalyst-center-global-manager --version

2. UPGRADE to 1.4.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade catalyst-center-global-manager

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade catalyst-center-global-manager

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-2026-20191?

catalyst center: upgrade to 3.1.6-75524.200; catalyst center global manager: upgrade to 1.4.1. Exact commands for each OS are on this page.

Is CVE-2026-20191 being exploited?

CVE-2026-20191 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-2026-20191 affect?

CVE-2026-20191 affects catalyst center, catalyst center global manager. Severity is high (CVSS 7.5). A vulnerability in Cisco Catalyst Center could allow an unauthenticated, remote attacker to read arbitrary files from a restricted container.  This vulnerability is due to insufficient validation of user-supplied input. An attacker

How urgent is CVE-2026-20191?

Priority 44/100. High severity; Remotely exploitable, no login, no user action

Software pages

Cisco vulnerabilities

References

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