CVE-2026-58016: Glib: integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml"
CSIRTS triage
- What
- There is an integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml".
- Who is affected
- Deployments using affected versions of Glib.
- Urgency
- Remediation is high urgency due to the high severity of the issue.
- Action
- Patch to the latest version to resolve CVE-2026-58016.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58016
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-580160.55% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 43% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-58016 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- high[NEW] [high] Red Hat Enterprise Linux (sssd, glib, c-ares): Multiple vulnerabilitiescert-bund
- high[NEW] [high] IBM App Connect Enterprise: Multiple vulnerabilitiescert-bund
- unknownMultiple vulnerabilities in Microsoft Azure Linux (July 15, 2026)cert-fr-avis
- highCVE-2026-58016: A flaw was found in GLib. A state confusion issue exists in g_dbus_node_info_new_for_xml() in …nvd
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