It is possible for an unauthenticated remote DCOM websocket connection to crash the Command Centre service's DCOM websocket thread due to im
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.
- Published
- Sep 15, 2020
- Updated
- Jun 16, 2026
- EPSS
- 1.0% · 63th percentile
- CWE
- CWE-404
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Report tools
Action score
30
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.0%
CNA vs NVD score
- NVD
- 7.5
- CNA · Gallagher
- 7.5
- agree
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| gallagher | command centre | cpe:2.3:a:gallagher:command_centre |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- gallagher command centre8.00 and later · before 8.00.1228
- gallagher command centre8.10 and later · before 8.10.1211
- gallagher command centre8.20 and later · before 8.20.1166
- gallagher command centre8.00.1228
- gallagher command centre8.10.1211
- gallagher command centre8.20.1166
Versions reported by the vendor
Affected version ranges reported by the assigning authority (Gallagher). Independent of NVD's CPE analysis and usually ahead of it.
Gallagher Command Centre
- unspecified and later · up to and including 7.90affected
- 8.20 and later · before 8.20.1166 (MR3)affected
- 8.10 and later · before 8.10.1211 (MR5)affected
- 8.00 and later · before 8.00.1228 (MR6)affected
Same product
gallagher: all recordsOther highest-scoring records for the same primary product.
- CVE-2020-16098It is possible to enumerate access card credentials via an unauthenticated network connection to the server in versions of Command Centre v839Monitor
- CVE-2019-15294An issue was discovered in Gallagher Command Centre 8.10 before 8.10.1092(MR2).39Monitor
- CVE-2020-16103Type confusion in Gallagher Command Centre Server allows a remote attacker to crash the server or possibly cause remote code execution.36Monitor
- CVE-2021-23140Improper Authorization vulnerability in Gallagher Command Centre Server allows command line macros to be modified by an unauthorised Command35Monitor
- CVE-2023-23570
Client-Side enforcement of Server-Side security for the Command Centre server could be bypassed and lead to invalid configuration with unde32Monitor
- CVE-2021-23205Improper Encoding or Escaping in Gallagher Command Centre Server allows a Command Centre Operator to alter the configuration of Controllers 32Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-404 · Improper Resource Shutdown or ReleaseCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.