6.5
CVE-2026-48101
- EPSS 0.28%
- Veröffentlicht 05.06.2026 15:17:38
- Zuletzt bearbeitet 11.06.2026 18:02:03
- Quelle security-advisories@github.com
- CVE-Watchlists
- Unerledigt
LoginGHSL-2026-117: 7-Zip UEFI Capsule uninitialized heap memory disclosure
7-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.
| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.28% | 0.193 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| security-advisories@github.com | 6.5 | 2.8 | 3.6 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
|
CWE-908 Use of Uninitialized Resource
The product uses or accesses a resource that has not been initialized.
https://securitylab.github.com/advisories/GHSL-2026-115_GHSL-2026-122_7-zip/