7-Zip < 26.03 SquashFS Uninitialized Memory Disclosure via UID/GID Table
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| 7-Zip | 7-Zip | unaffected |
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| 7-zip | 7-zip |
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No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.186% probability within 30 days)
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| Metrics |
ssvc
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| Type | Values Removed | Values Added |
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| First Time appeared |
7-zip
7-zip 7-zip |
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| Vendors & Products |
7-zip
7-zip 7-zip |
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| Description | 7-Zip before 26.03 contains an uninitialized memory disclosure vulnerability in the SquashFS v4 archive handler (SquashfsHandler.cpp) that allows attackers to leak heap memory by crafting a malicious archive where the superblock’s no_ids field is set so that the final metadata block’s expected size is miscomputed and bypasses the size validation check. By listing or extracting the crafted archive, attackers can cause the application to return uninitialized heap memory as the kpidUserId and kpidGroupId properties, exposing potentially sensitive process memory contents to the user. | |
| Title | 7-Zip < 26.03 SquashFS Uninitialized Memory Disclosure via UID/GID Table | |
| Weaknesses | CWE-908 | |
| References |
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| Metrics |
cvssV3_1
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