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Vulnerabilities CVE-2026-47133

CVE-2026-47133

Medium
Open
TLP:CLEAR

ClearanceKit's signed policy tables lack monotonic counter, allowing replay of older legitimately-signed snapshots

NVD CVE.org
Critical Infrastructure

AI Analysis

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Description

ClearanceKit intercepts file-system access events on macOS and enforces per-process access policies. Prior to version 5.0.10, each table in the on-disk SQLite policy store (`/Library/Application Support/clearancekit/store.db`) is verified using an ECDSA signature stored in the `data_signatures` table. The signed payload contains only the canonical row content, with no version counter or freshness binding. An attacker who can write `store.db` and the matching `data_signatures` row — feasible during the opfilter-update window when the Endpoint Security filter is offline, or via offline-boot / decrypted-backup scenarios — can substitute a previously-captured legitimately-signed snapshot. opfilter accepts the older snapshot as fully valid on next boot because the existing signatures still verify. Version 5.0.10 patches the issue.

Details

CVSS Score
6.9
EPSS Score
0.11%

1.2th percentile

CVSS Vector
CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N
Confidence
90%
Published
Jul 20, 2026
Last Modified
Jul 20, 2026
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