Disclosure summary
7-Zip for Windows through 26.01 fails to preserve the Mark-of-the-Web when extracting a crafted RAR5 archive, because its guard that suppresses an archive-supplied Zone.Identifier stream matches the exact name 'Zone.Identifier' while a RAR5 STM record named ':Zone.Identifier:$DATA' is not matched and NTFS canonicalizes it to the same stream, overwriting the propagated Internet-zone marker with ZoneId=0. A second STM record named '::$DATA' overwrites the extracted file's default data stream, letting an attacker defeat SmartScreen/MotW warnings and spoof file content.
Source-reported weakness categories
CWE-693
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2026-58052
Open original source · Updated Oct 07, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| 7-zip | 7-zip | * {"versionEndExcluding":"26.03"} |
Original records & references
- NIST NVD record
- CVE Program record
- github.com — Broken Link
- github.com — Product
- www.vulncheck.com — Third Party Advisory
PUBLISHED 2026-06-27T22:16:32-04:00
MODIFIED 2026-10-07T16:49:46-04:00
INGESTED 2026-10-10T20:25:11-04:00