# CVE-2026-58052: p7zip: 7-Zip for Windows through 26.01 fails to preserve the Mark-of-the-Web when extracting a crafted RAR5 archive, because...

CVE-2026-58052 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-58052, released July 14, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-58052
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0017
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 28, 2026

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | 7zip Debian 14 | 26.03+dfsg-1 | [DEBIAN-CVE-2026-58052](https://patchblox.com/security/data/fix/linux/debian-cve-2026-58052.md) | Jul 14, 2026 |
| Linux | p7zip Debian 13.5 (trixie) | 16.02+transitional.1 | [DEBIAN-CVE-2026-58052](https://patchblox.com/security/data/fix/linux/debian-cve-2026-58052.md) | Jul 14, 2026 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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