What is the CVSS score of CVE-2026-26721?

CVE-2026-26721 has a CVSS 3.1 base score of 7.1 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N. EPSS exploitation probability: 0.0%.

Is there a public PoC exploit available for CVE-2026-26721?

Yes, a public proof-of-concept exploit is available for CVE-2026-26721. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-26721?

Within 24 hours: Inventory all instances of Global Facilities Management Software and identify affected versions; isolate critical instances from production networks if possible and enable enhanced logging. Within 7 days: Contact the vendor for patch timelines and interim guidance; implement network-based mitigations such as WAF rules or IP whitelisting for management interfaces; restrict user access to affected systems to essential personnel only. Within 30 days: Prepare for emergency patching upon vendor release; evaluate alternative solutions; conduct security assessment of affected systems for signs of compromise.

Global Facilities Management Software CVE-2026-26721

HIGH

Use of GET Request Method With Sensitive Query Strings (CWE-598)

2026-02-20 cve@mitre.org

Information Disclosure Global Facilities Management Software Keystorage

7.1

CVSS 3.1 · NVD

View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

Access

Craft malicious URL with sid parameter
Exploit

Send link to user requiring click
Execution

Browser executes request with user interaction
Impact

Sensitive information exposed in response

Vulnerability Assessment

Weakness	CWE CWE-598 OWASP Top 10:2025 A06:2025 - Insecure Design ASVS 5.0 V4 - API and Web Service Sensitive data in POST not GET
Exploitation Conditions	Global Facilities Management Software v.20230721a with sid query parameter processing enabled; victim user interaction required to click malicious link; no authentication barriers present.
Impact	CVSS 7.1 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: None. User interaction: Required. Exploitable via remote/network. Public exploit/POC available.
Exploit ScenarioDerived	A remote attacker could exploit this vulnerability to compromise the affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Global Facilities Management Software versions up to 20230721a contains a security vulnerability (CVSS 7.1).

RemediationAI

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

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

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.1 HIGH

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

Low

Availability

None

Lifecycle Timeline

PoC Detected

Feb 26, 2026 - 17:57 vuln.today

Public exploit code

CVE Published

Feb 20, 2026 - 17:25 nvd

HIGH 7.1

DescriptionCVE.org

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.

Executive ViewAI

Why It Matters

A high-severity vulnerability (CVSS 7.1) affects Global Facilities Management Software versions through 20230721a, with public exploits already available. Organizations using this software face immediate risk of unauthorized access or system compromise, and the lack of available patches means vulnerability windows could extend significantly.

Business Impact: High

Compensating Controls

Until patch availability: Implement network segmentation to restrict access to affected software; deploy Web Application Firewall (WAF) rules to block known exploit patterns; enforce multi-factor authentication for all affected system access; disable non-essential features or plugins if possible; increase security monitoring and log aggregation for affected instances; consider temporarily disabling remote access management interfaces where operationally feasible.

Threat Intelligence Overview

EPSS Score

0.0%

Top 87% exploitable

Exploit

POC

Public exploit code exists

Data Quality

4 sources

Confidence: Medium

NVD

CVE.org

EPSS

GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC Yes

EPSS 0.0%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

Poc

System Exposure· derived

Open

Automatable· derived

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +36

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.