JVN#59547048
WinRAR vulnerable to the symbolic link based "Mark of the Web" check bypass
Overview
WinRAR provided by RARLAB is vulnerable to the symbolic link based "Mark of the Web" check bypass.
Products Affected
- WinRAR versions prior to 7.11
Description
WinRAR provided by RARLAB contains a vulnerability that bypasses the "Mark of the Web" (CWE-356) security warning function for files when opening a symbolic link that points to an executable file.
In the initial Windows configuration, only administrators have the privilege to create symbolic links.
Impact
If a symbolic link specially crafted by an attacker is opened on the affected product, arbitrary code may be executed.
Solution
Update the Software
Update the software to the latest version according to the information provided by the developer.
Vendor Status
| Vendor | Link |
| RARLAB | WinRAR |
References
JPCERT/CC Addendum
Vulnerability Analysis by JPCERT/CC
| Attack Vector(AV) | Physical (P) | Local (L) | Adjacent (A) | Network (N) |
|---|---|---|---|---|
| Attack Complexity(AC) | High (H) | Low (L) | ||
| Privileges Required(PR) | High (H) | Low (L) | None (N) | |
| User Interaction(UI) | Required (R) | None (N) | ||
| Scope(S) | Unchanged (U) | Changed (C) | ||
| Confidentiality Impact(C) | None (N) | Low (L) | High (H) | |
| Integrity Impact(I) | None (N) | Low (L) | High (H) | |
| Availability Impact(A) | None (N) | Low (L) | High (H) |
Credit
Taihei Shimamine of Mitsui Bussan Secure Directions, Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
Other Information
| JPCERT Alert |
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| JPCERT Reports |
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| CERT Advisory |
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| CPNI Advisory |
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| TRnotes |
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| CVE |
CVE-2025-31334 |
| JVN iPedia |
JVNDB-2025-000025 |