CVE-2021-23155

mediumpriority · track · 27EPSS 0.005 · 41 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.48% (41st) EPSS

CVSS 4.3 · medium

Is it mine?

4 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

Improper validation of the cloud certificate chain in Mobile Client allows man-in-the-middle attack to impersonate the legitimate Command Centre Server. This issue affects: Gallagher Command Centre Mobile Client for Android 8.60 versions prior to 8.60.065; version 8.50 and prior versions.

cvss

Technical severity, 0–10. One row per scoring source.

9.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 4.3–9

v2.04.3mediumAV:N/AC:M/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 2.9

v3.16.8mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 2.2 · impact 4

v3.19criticalCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · ENISA EU

v3.19criticalCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · disclosures@gallagher.comexploitability 2.2 · impact 6

v3.16.2mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-295USprimaryCWE-296US

affected products (4)

Products and version ranges known to be affected.

Gallagher Command Centre Mobile Client for Android≤ unspecified ≤8.50enisa_euvdEU
Gallagher Command Centre Mobile Client for Android8.60 → 8.60.065enisa_euvdEU
gallagher command centre mobile client≤ 8.50nvdUScpe:2.3:a:gallagher:command_centre_mobile_client:*:*:*:*:*:*:*:*
gallagher command centre mobile client8.60 → 8.60.065nvdUScpe:2.3:a:gallagher:command_centre_mobile_client:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2021-11-18modified 2026-06-17

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+1889 more

references (4)

External citations — patches, advisories, analysis.

scry

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