Buffer overflow in Red Hat Enterprise Linux 6
CVE-2026-102474
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.
Vulnerability class: Buffer Overflow
Published .
CVSS v3 metric
CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-102474 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
Frequently asked questions
- What is CVE-2026-102474?
- CVE-2026-102474 is a medium-severity vulnerability in Red Hat Enterprise Linux 6, classified under Out-of-bounds Write. CVSS score: 4.0/10. Published 2026-09-29.
- How severe is CVE-2026-102474?
- Medium severity. CVSS v3 base score is 4.0 out of 10.