CVE-2026-58014: Glib: off-by-one error in glib/gkeyfile.c via "g_key_file_get_locale_string_list"

highCVSS 7.3CVE-2026-58014

CSIRTS triage

vendor: Glib product: GlibOther

What: An off-by-one error exists in the function 'g_key_file_get_locale_string_list'.
Who is affected: Deployments of Glib that use the affected function.
Urgency: Remediation is urgent due to the high severity of the vulnerability.
Action: Update to the latest version of Glib to address this issue.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: high — CVSS 7.3
Published: 2026-06-09
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58014

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-2026-580140.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-58014	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

highCVE-2026-58014: A flaw was found in GLib. An off-by-one error can occur in the g_key_file_get_locale_string_li…nvd

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