Insufficient Granularity of Access Control Affecting thunderbird package, versions [,137.0.2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-THUNDERBIRD-9788172
- published21 Apr 2025
- disclosed15 Apr 2025
- creditDario Weißer
Introduced: 15 Apr 2025
NewCVE-2025-3522 (opens in a new tab)How to fix?
Upgrade thunderbird to version 137.0.2 or higher.
Overview
Affected versions of this package are vulnerable to Insufficient Granularity of Access Control due to the handling of the X-Mozilla-External-Attachment-URL header. An attacker can leak hashed Windows credentials by crafting a malicious attachment URL that references internal resources such as chrome:// or SMB share file:// links.