CVE intelligence and bounded remediation

CVE-2025-62003 — BullWall Server Intrusion Protection has a noticeable configuration-dependent delay before the MFA check for RDP connections

High CVSS 7.7

BullWall Server Intrusion Protection has a noticeable configuration-dependent delay before the MFA check for RDP connections. A remote, authenticated attacker can potentially bypass detection during this delay. Versions 4.6.0.0, 4.6.0.6, 4.6.0.7, and 4.6.1.4 are affected. Other versions may also be affected.

Severity
High
CVSS
7.7 (4.0)
Published
2025-12-18
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-367

Affected products

  • bullwall / server_intrusion_protection / 4.6.0.0
  • bullwall / server_intrusion_protection / 4.6.0.6
  • bullwall / server_intrusion_protection / 4.6.0.7
  • bullwall / server_intrusion_protection / 4.6.1.4

Matched remediation archetype

Race condition, TOCTOU, and lifecycle synchronization

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Check exposure

  • Map concurrent actors, shared state, lock boundaries, signals, callbacks, retries, and check-then-use sequences in the affected path.
  • Determine whether untrusted users can influence timing, object names, filesystem state, or repeated state transitions.
  • Identify clustered and multi-process behavior that repository-local tests may not represent.

Remediate safely

  • Make the sensitive state transition atomic or protect it with a consistently ordered synchronization primitive.
  • Perform authorization and invariant checks on the same authoritative object and transaction used for the operation.
  • Use unique private resources, safe ownership transfer, and idempotent operations; add deterministic concurrency regression tests.

Authoritative sources

Complete CVE record and remediation plan

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