CVE-2026-58052

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.

CVSS v3 3.3 LOW

3.3^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.8 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/bikini/exploitarium/tree/main/7zip-rar5-motw-chain-poc	Broken Link
https://github.com/ip7z/7zip	Product
https://www.vulncheck.com/advisories/7-zip-mark-of-the-web-bypass-via-rar5-alternate-data-stream-name-collision	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:7-zip:7-zip:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-06-28 02:16

Updated : 2026-08-07 20:47

NVD link : CVE-2026-58052

Mitre link : CVE-2026-58052

CVE.ORG link : CVE-2026-58052

JSON object : View

Products Affected

7-zip

7-zip

CWE

CWE-693

Protection Mechanism Failure

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