CVE-2026-102474
Medium · 4.0CVSS
4.0
EPSS
0.1%
Published
Sep 29, 2026
CISA due date
—
The record
A flaw was found in dash. The printf builtin reserves four bytes before converting a Unicode \u or \U escape, but the multi-byte token can need five or six bytes. A local user who can supply such an escape to dash printf or echo %b, including through dash -c and a positional argument, can write one or two bytes past that reservation.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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