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Information Technology Laboratory
National Vulnerability Database
National Vulnerability Database
NVD
CVE-2026-48101 DetailDescription7-Zip is a file archiver with a high compression ratio. Versions 9.21 through 26.00 contain an An uninitialized memory disclosure vulnerability in the UEFI capsule (.scap) parser in 7-Zip. The OpenCapsule function allocates a heap buffer of attacker-declared CapsuleImageSize (up to 1 GiB) without zero-initialization, then reads the file contents into it with ReadStream_FALSE whose return value is silently discarded. If the file is truncated, the unread tail of the buffer retains uninitialized heap memory, which is then exposed as extracted file content via GetStream. Version 26.0.1 fixes the issue. Metrics
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CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
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Weakness Enumeration
Known Affected Software Configurations Switch to CPE 2.2CPEs loading, please wait.
Denotes Vulnerable Software Change History5 change records found show changesCVE Modified by CISA-ADP 6/17/2026 6:54:51 AM
CVE Modified by GitHub, Inc. 6/17/2026 6:54:51 AM
Reanalysis by NIST 6/11/2026 2:02:03 PM
Initial Analysis by NIST 6/08/2026 9:41:55 AM
New CVE Received from GitHub, Inc. 6/05/2026 12:16:41 PM
Quick InfoCVE Dictionary Entry:CVE-2026-48101 NVD Published Date: 06/05/2026 NVD Last Modified: 06/17/2026 Source: GitHub, Inc. |
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