CVE-2026-26721: An issue in Key Systems Inc Global Facilities Management Software v.20230721a allows a remote attacker to obta

Routine

HIGH 7.1DOWNGRADE

CVE-2026-26721 is a high-severity flaw (CVSS 7.1) affecting global facilities management software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue in Key Systems Inc Global Facilities Management Software v.20230721a allows a remote attacker to obtain sensitive information via the sid query parameter.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 76%)
CISA exploited list	No
Weakness	CWE-598
Published	2026-02-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: keystorage

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-02-20 17:25 UTCPublished CVE record published
2026-06-17 10:26 UTCUpdated Record last modified

keystorage global facilities management software DOWNGRADE

Affected: 20230721a

Fixed in: no fixed release known

Safe to downgrade to: a release before 20230721a

1. Check installed version

apt-cache policy global-facilities-management-software || rpm -q global-facilities-management-software || global-facilities-management-software --version

2. No fixed release: DOWNGRADE to a release before 20230721a (Debian / Ubuntu)

apt-cache madison global-facilities-management-software sudo apt install global-facilities-management-software=<VERSION_BEFORE_20230721a> sudo apt-mark hold global-facilities-management-software

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list global-facilities-management-software sudo dnf downgrade global-facilities-management-software-<VERSION_BEFORE_20230721a> sudo dnf versionlock add global-facilities-management-software

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-2026-26721?

global facilities management software: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-26721 being exploited?

CVE-2026-26721 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-2026-26721 affect?

CVE-2026-26721 affects global facilities management software. Severity is high (CVSS 7.1). An issue in Key Systems Inc Global Facilities Management Software v.20230721a allows a remote attacker to obtain sensitive information via the sid query parameter.

How urgent is CVE-2026-26721?

Priority 36/100. High severity; Public exploit reference

Related CVEs

CVE-2026-26724 HIGH 7.6 DOWNGRADE Cross Site Scripting vulnerability in Key Systems Inc Global Facilities Management Software v
CVE-2026-26723 HIGH 8.2 DOWNGRADE Cross Site Scripting vulnerability in Key Systems Inc Global Facilities Management Software v
CVE-2026-26722 CRITICAL 9.4 DOWNGRADE An issue in Key Systems Inc Global Facilities Management Software v.20230721a allows a remote attacker to esca

References

← Back to latest CVEs