CVE-2026-1484

MEDIUM EPSS 22.0%

Published Jan 27, 20265mo ago · Modified Jun 17, 20261w ago

4.2 CVSS 3.1

Medium

Published Jan 27, 2026 5mo ago

Last Modified Jun 17, 2026 1w ago

Description

A flaw was found in the GLib Base64 encoding routine when processing very large input data. Due to incorrect use of integer types during length calculation, the library may miscalculate buffer boundaries. This can cause memory writes outside the allocated buffer. Applications that process untrusted or extremely large Base64 input using GLib may crash or behave unpredictably.

CVSS Details

Base Score

4.2

Exploitability

1.6

Impact

2.5

Vector string

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L

Attack Vector Network

Attack Complexity High

Privileges Required None

User Interaction Required

Scope Unchanged

Confidentiality None

Integrity Low

Availability Low

Threat Intelligence

EPSS Exploit Probability

22.0% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

References 4

access.redhat.com https://access.redhat.com/security/cve/CVE-2026-1484
bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2433259
cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-253495.html
gitlab.gnome.org https://gitlab.gnome.org/GNOME/glib/-/issues/3870

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.