CVE-2026-6846
A heap-buffer-overflow vulnerability exists when processing a specially crafted XCOFF (Extended Common Object File Format) object file during linking.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.17%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.17% probability · 7th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-122
- Affected
- gnu/binutils · redhat/hardened images · redhat/openshift container platform · redhat/enterprise linux
- Source
- secalert@redhat.com
References
- https://access.redhat.com/errata/RHSA-2026:33527
- https://access.redhat.com/errata/RHSA-2026:39022
- https://access.redhat.com/security/cve/CVE-2026-6846Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2460006Issue Tracking, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2026:33527
- https://access.redhat.com/security/cve/CVE-2026-6846Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2460006Issue Tracking, Third Party Advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6846.json
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.