Buffer overflow in GNU Binutils
CVE-2026-6846
A flaw was found in binutils. A heap-buffer-overflow vulnerability exists when processing a specially crafted XCOFF (Extended Common Object File Format) object file during linking. A local attacker could trick a user into processing this malicious file, which could lead to arbitrary code execution, allowing the attacker to run unauthorized commands, or cause a denial of service, making the system unavailable.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (8.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 8.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- GNU Binutils
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat Hardened Images — versions 2.45.1-5.1.hum1, 2.46.1-1.hum1
- Red Hat Openshift Container Platform 4
- Red Hat Enterprise Linux — versions 6.0, 8.0, 9.0
- Red Hat Hardened Images
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-6846 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Third Party Advisory, Issue Tracking)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- access.redhat.com/errata/RHSA-2026:33527 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:39022 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-6846?
- CVE-2026-6846 is a high-severity vulnerability in GNU Binutils, classified under Heap-based Buffer Overflow. CVSS score: 7.8/10. Published 2026-04-22.
- How severe is CVE-2026-6846?
- High severity. CVSS v3 base score is 7.8 out of 10.