CVE-2021-23211

Cloud encryption key disclosure via memory dumps

Published Jun 11, 2021 · Updated Aug 3, 2024

Cleartext key storage in Gallagher Security Command Centre Server 8.40 before 8.40.1888 (MR3) allows local users to read a cloud encryption key. The server retains the cloud end-to-end encryption key in plaintext process memory, leaving it recoverable from a server memory dump. Exploitation requires high local privileges and a site using Command Centre Cloud; the published impact is discovery of the key.

CVSS severity6.0
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext key storage in Gallagher Security Command Centre Server 8.40 before 8.40.1888 (MR3) allows local users to read a cloud encryption key. The server retains the cloud end-to-end encryption key in plaintext process memory, leaving it recoverable from a server memory dump. Exploitation requires high local privileges and a site using Command Centre Cloud; the published impact is discovery of the key.

The record

CVE
CVE-2021-23211
Published
Jun 11, 2021
Updated
Aug 3, 2024
Vendor
Gallagher Security
Product
Command Centre
Classifications
CWE-316
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jun 11, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=8.40 <8.40.1888 (MR3)

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Gallagher Security · Command Centreversion=8.40 <8.40.1888 (MR3)

Published CVSS scores

6.0Gallagher Group Ltd.CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
4.4NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
2.1NIST NVDAV:L/AC:L/Au:N/C:P/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-316Cleartext Storage of Sensitive Information in Memory

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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