CVE-2026-48101
Description
A flaw was found in 7-Zip. This uninitialized memory disclosure vulnerability exists in the UEFI capsule (.scap) parser. A remote attacker could exploit this by crafting a malicious .scap file, leading to the exposure of sensitive uninitialized heap memory as extracted file content. This could result in significant information disclosure.
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Memory; Read Application Data
When reusing a resource such as memory or a program variable, the original contents of that resource may not be cleared before it is sent to an untrusted party.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
The uninitialized resource may contain values that cause program flow to change in ways that the programmer did not intend.
Frequently Asked Questions
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