This vulnerability involves an out-of-bounds write in the GLib Base64 encoding routine due to improper integer handling when processing very large input data. The miscalculation of buffer boundaries can cause memory corruption, potentially leading to application crashes or unpredictable behavior. It affects Red Hat Enterprise Linux 10 systems that use GLib for Base64 processing. The CVSS 3.1 score is 4.2 (medium), reflecting network attack vector with high attack complexity, no privileges required, user interaction needed, unchanged scope, no confidentiality impact, low integrity impact, and low availability impact.

The vulnerability can cause applications that process untrusted or very large Base64 input to crash or behave unpredictably due to memory corruption from out-of-bounds writes. There is no direct confidentiality impact. Integrity and availability impacts are low but present. No known exploits in the wild have been reported, reducing immediate risk.

Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-1484 for current remediation guidance. Until an official fix is available, avoid processing untrusted or extremely large Base64 input with affected GLib versions. Monitor vendor communications for updates on patches or workarounds.