How severe is CVE-2020-16100?

CVE-2020-16100 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-16100 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-16100?

CVE-2020-16100 primarily affects Gallagher Command Centre. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-16100?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-16100 published?

CVE-2020-16100 was published on 2020-09-15 and last updated on 2026-06-17.

CVE-2020-16100

CVE-2020-16100 is a high-severity vulnerability in Gallagher Command Centre with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-404.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-404
Affected product: Gallagher Command Centre
Published: 2020-09-15
Last modified: 2026-06-17

Description

It is possible for an unauthenticated remote DCOM websocket connection to crash the Command Centre service's DCOM websocket thread due to improper shutdown of closed websocket connections, preventing it from accepting future DCOM websocket (Configuration Client) connections. Affected versions are v8.20 prior to v8.20.1166(MR3), v8.10 prior to v8.10.1211(MR5), v8.00 prior to v8.00.1228(MR6), all versions of 7.90 and earlier.

Frequently asked questions

What is CVE-2020-16100?: It is possible for an unauthenticated remote DCOM websocket connection to crash the Command Centre service's DCOM websocket thread due to improper shutdown of closed websocket connections, preventing it from accepting future DCOM websocket (Configuration Client) connections. Affected versions are v8.20 prior to v8.20.1166(MR3), v8.10 prior to v8.10.1211(MR5), v8.00 prior to v8.00.1228(MR6), all versions of 7.90 and earlier.
How severe is CVE-2020-16100?: CVE-2020-16100 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-16100 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-16100?: CVE-2020-16100 primarily affects Gallagher Command Centre. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-16100?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-16100 published?: CVE-2020-16100 was published on 2020-09-15 and last updated on 2026-06-17.

References

https://security.gallagher.com/Security-Advisories/CVE-2020-16100

Affected products (4)

cpe:2.3:a:gallagher:command_centre:*:*:*:*:*:*:*:*
cpe:2.3:a:gallagher:command_centre:8.00.1228:-:*:*:*:*:*:*
cpe:2.3:a:gallagher:command_centre:8.10.1211:-:*:*:*:*:*:*
cpe:2.3:a:gallagher:command_centre:8.20.1166:-:*:*:*:*:*:*

More vulnerabilities in Gallagher Command Centre

CVE-2021-23230 — Critical (CVSS 9.9): A SQL Injection vulnerability in the OPCUA interface of Gallagher Command Centre allows a remote unprivileged Command…
CVE-2021-23140 — Critical (CVSS 9.9): Improper Authorization vulnerability in Gallagher Command Centre Server allows command line macros to be modified by an…
CVE-2020-16096 — Critical (CVSS 9.9): In Gallagher Command Centre versions 8.10 prior to 8.10.1134(MR4), 8.00 prior to 8.00.1161(MR5), 7.90 prior to…
CVE-2020-16098 — Critical (CVSS 9.8): It is possible to enumerate access card credentials via an unauthenticated network connection to the server in versions…
CVE-2019-15294 — Critical (CVSS 9.8): An issue was discovered in Gallagher Command Centre 8.10 before 8.10.1092(MR2). Upon an upgrade, if a custom service…
CVE-2024-21815 — Critical (CVSS 9.1): Insufficiently protected credentials (CWE-522) for third party DVR integrations to the Command Centre Server are…

All CVEs affecting Gallagher Command Centre →

Other CWE-404 vulnerabilities

CVE-2023-24444 — Critical (CVSS 9.8): Jenkins OpenID Plugin 2.4 and earlier does not invalidate the previous session on login.
CVE-2024-31611 — Critical (CVSS 9.1): SeaCMS 12.9 has a file deletion vulnerability via admin_template.php.
CVE-2018-8450 — High (CVSS 8.8): A remote code execution vulnerability exists when Windows Search handles objects in memory, aka "Windows Search Remote…
CVE-2026-11317 — High (CVSS 8.7): A denial of service security issue exists in the affected product. The security issue stems from a fault occurring when…
CVE-2022-25762 — High (CVSS 8.6): If a web application sends a WebSocket message concurrently with the WebSocket connection closing when running on…
CVE-2020-26070 — High (CVSS 8.6): A vulnerability in the ingress packet processing function of Cisco IOS XR Software for Cisco ASR 9000 Series…

Browse all CWE-404 vulnerabilities →