TI-2025-40075 Aliases CVE-2025-64734 GHSA-r4wh-whpg-rc2q

Missing Release of Resource after Effective Lifetime (CWE-772) in the T21 Reader allows…

LOW 12CWE-772Published 2025-11-18 · Updated 2025-11-19

Key facts

Attack vector: Physical
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · Low
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-772.

Summary

Missing Release of Resource after Effective Lifetime (CWE-772) in the T21 Reader allows an attacker with physical access to the Reader to perform a denial-of-service attack against that specific reader, preventing cardholders from badging for entry. This issue affects Command Centre Server: 9.30 prior to vCR9.30.251028a (distributed in 9.30.2881 (MR3)), 9.20 prior to vCR9.20.251028a (distributed in 9.20.3265 (MR5)), 9.10 prior to vCR9.10.251028a (distributed in 9.10.4135 (MR8)), all versions of 9.00 and prior.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00172 6th percentileScored 2026-11-07

Fix Fixed T21 Reader (Gallagher): vCR9.30.251028a, vCR9.20.251028a, vCR9.10.251028a

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Gallagher	T21 Reader	up to 9.00; 9.30 to before vCR9.30.251028a; 9.20 to before vCR9.20.251028a; 9.10 to before vCR9.10.251028a	vCR9.30.251028a, vCR9.20.251028a, vCR9.10.251028a	Patch available	CNA

T21 Reader VendorGallagher Affected up to 9.00; 9.30 to before vCR9.30.251028a; 9.20 to before vCR9.20.251028a; 9.10 to before vCR9.10.251028a Fixed in vCR9.30.251028a, vCR9.20.251028a, vCR9.10.251028a Patch available CNA

Remediation

Fix · CNA T21 Reader (Gallagher) Fixed in vCR9.30.251028a, vCR9.20.251028a, vCR9.10.251028a

Timeline

2026-10-02 Threatist record created from CVE-2025-64734
2026-10-03 Alias added: GHSA-r4wh-whpg-rc2q

References

Other 1

https://security.gallagher.com/en-NZ/Security-Advisories/CVE-2025-64734

TI-2021-05931 Improper authorization in Gallagher Command Centre CVSS 3.1CRITICAL 9.9
TI-2020-12668 Improper authentication in Gallagher Command Centre CVSS 3.1CRITICAL 9.8
TI-2020-12666 Improper authorization in Gallagher Command Centre CVSS 3.1CRITICAL 9.9
TI-2019-11404 An issue was discovered in Gallagher Command Centre 8.10 before 8.10.1092(MR2). CVSS 3.0CRITICAL 9.8
TI-2025-30196 Exposure of Sensitive System Information to an Unauthorized Control Sphere (CWE-497) in… CVSS 3.1CRITICAL 9.9
TI-2023-10202 Controller 6000 buffer overflow via upload feature in web interface CVSS 3.1CRITICAL 9.8

See all 74 →

Sources

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