---
cve: "CVE-2026-20757"
severity: "LOW"
cvss: 2.5
epss: "7%"
vendor: "Gallagher"
kev: false
exploited: false
published: "2026-03-03 03:15:54"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-19T04:52:04+02:00"
---

# CVE-2026-20757

> 2.5 LOW

## Beschreibung

Improper Locking vulnerability (CWE-667) in Gallagher Morpho integration allows a privileged operator to cause a limited denial-of-service in the Command Centre Server.



This issue affects Command Centre Server: 

9.40 prior to vEL9.40.1976(MR1), 9.30 prior to vEL9.30.3382 (MR4), 9.20 prior to vEL9.20.3783 (MR6), 9.10 prior to vEL9.10.4647 (MR9), all versions of 9.00 and prior.

## CVSS-Vektor

```
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Hoch | good |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Keine | good |
| A Verfügbarkeit | Gering | warn |

## Schwachstellen-Klasse

- **CWE-667** — Improper Locking
  The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.

## Angriffsmuster (CAPEC)

- [CAPEC-25 — Forced Deadlock](https://capec.mitre.org/data/definitions/25.html) _(Severity: High)_
- [CAPEC-26 — Leveraging Race Conditions](https://capec.mitre.org/data/definitions/26.html) _(Severity: High)_
- [CAPEC-27 — Leveraging Race Conditions via Symbolic Links](https://capec.mitre.org/data/definitions/27.html) _(Severity: High)_

## ATT&CK-Techniken

- [T1499.004 — Endpoint Denial of Service: Application or System Exploitati](https://attack.mitre.org/techniques/T1499/004/)

## Referenzen

- <https://security.gallagher.com/en-NZ/Security-Advisories/CVE-2026-20757>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-20757) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_