Cyber Resilience

CVE-2025-52457

Published
18 November 2025
Modified
15 April 2026
CVSS Score v3.1 5.7
Click a component to see what it means
Raw vectorCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS Score 0.0014 4th percentile
Risk Priority 39 floored blend · peak EPSS

Summary

CVE-2025-52457 is a medium-severity Observable Timing Discrepancy (CWE-208) vulnerability in Gallagher (inferred from references). Its CVSS base score is 5.7 (Medium).

Operationally, ranked at the 4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to PE-19 (Information Leakage) and PE-3 (Physical Access Control) — see the control section below for these in your framework.

EU & UK References

Vulnerability Data

Observable Timing Discrepancy (CWE-208) in HBUS devices may allow an attacker with physical access to the device to extract device-specific keys, potentially compromising further site security. This issue affects Command Centre Server: 9.30 prior to vCR9.30.251028a (distributed in 9.30.2881 (MR3)),…

more

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.

CWE(s)
CWE-208

Related Threats

CVEs Like This One

CVE-2026-44368Shared CWE-208
CVE-2026-27882Shared CWE-208
CVE-2026-6656Shared CWE-208
CVE-2025-59058Shared CWE-208
CVE-2026-33129Shared CWE-208
CVE-2026-40194Shared CWE-208
CVE-2026-9537Shared CWE-208
CVE-2025-22234Shared CWE-208
CVE-2026-28464Shared CWE-208
CVE-2024-41828Shared CWE-208

Affected Assets

Gallagher
—
inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)
  • PE-3 Physical Access Control
  • PE-19 Information Leakage
  • SC-12 Cryptographic Key Establishment and Management
Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V11.2.4

Mitigating Controls (NIST 800-53 r5) AI

PE-3 Physical Access Control good match
prevent

Directly blocks the physical access the attacker requires to observe timing behavior on HBUS devices.

PE-19 Information Leakage good match
prevent

Explicitly requires protection against information leakage from physical access or side-channel emanations such as timing discrepancies.

SC-12 Cryptographic Key Establishment and Management partial match
prevent

Mandates secure cryptographic key establishment and management practices that reduce the impact of extracted device-specific keys.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require constant-time implementations that eliminate observable timing discrepancies.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.17 Clock synchronization none match
none

Consistent reference clocks limit the attacker's ability to measure or manipulate timing differences that could reveal internal state or processing paths.

References