What’s Vulnerable › Vulnerabilities

CVE-2026-4647: Binutils: out-of-bounds read in xcoff relocation processing in gnu binutils bfd library

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-23 · updated 2026-09-01
• Weakness: CWE-125

Description

A flaw was found in the GNU Binutils BFD library, a widely used component for handling binary files such as object files and executables. The issue occurs when processing specially crafted XCOFF object files, where a relocation type value is not properly validated before being used. This can cause the program to read memory outside of intended bounds. As a result, affected tools may crash or expose unintended memory contents, leading to denial-of-service or limited information disclosure risks.

Affected products

• GNU Binutils: all versions
• Red Hat Enterprise Linux: 6.0, 7.0, 8.0, 9.0, 10.0
• Red Hat OpenShift Container Platform 4.18: 4.0

References

• https://access.redhat.com/errata/RHSA-2026:33527
• https://access.redhat.com/errata/RHSA-2026:39022
• https://access.redhat.com/security/cve/CVE-2026-4647
• https://bugzilla.redhat.com/show_bug.cgi?id=2450302
• https://sourceware.org/bugzilla/show_bug.cgi?id=33919

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