Security readout for executives and security teams
Plain-English summary
Gallagher Command Centre Server could leave OSDP reader master keys readable in server memory dumps. An attacker would need local, high-privilege access, but exposed keys could affect physical access control trust. This is not listed in KEV, and the provided sources do not show active exploitation.
Executive priority
Treat as a planned but important remediation for physical access control environments. It is not evidenced as internet-scale or actively exploited, but exposed reader master keys can create material security risk.
Technical view
CVE-2021-23182 is CWE-316 cleartext storage of sensitive information in memory. It affects Gallagher Command Centre 8.30 and 8.40 before 8.40.1888 MR3. CVSS 3.1 is 6.0 with local attack vector, low complexity, high privileges, no user interaction, and high confidentiality and integrity impact.
Likely exposure
Exposure is likely limited to organizations running Gallagher Command Centre Server 8.30 or 8.40 before 8.40.1888, especially where memory dumps are generated, retained, or accessible to privileged users.
Exploitation context
The provided evidence indicates local, high-privilege access is required. The issue concerns discovery of OSDP reader master keys in server memory dumps. No KEV listing or cited source establishes active exploitation.
Researcher notes
Do not assume network exploitation from the CVSS vector. Validation should focus on version state, dump handling, privileged access paths, and whether sensitive OSDP keys could exist in retained memory artifacts.
Mitigation direction
- Upgrade affected 8.40 deployments to 8.40.1888 MR3 or later.
- Review Gallagher guidance for 8.30 remediation or upgrade path.
- Restrict access to Command Centre servers and diagnostic memory dumps.
- Limit retention and distribution of crash or support dump files.
Validation and detection
- Inventory Gallagher Command Centre Server versions in production and support environments.
- Confirm no 8.30 instances remain without vendor-approved remediation.
- Confirm 8.40 instances are at least 8.40.1888 MR3.
- Review who can create, access, export, or retain server memory dumps.
- Check whether historical dumps may contain sensitive access-control keys.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-316: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-23182 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N0.85.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6MediumVector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://security.gallagher.com/Security-Advisories/CVE-2021-23182CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Cleartext Storage of Sensitive Information in Memory
Cleartext Storage of Sensitive Information in Memory represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.