CVE-2026-58012
Published: 30 June 2026
Summary
CVE-2026-58012 is a medium-severity Buffer Over-read (CWE-126) vulnerability in Redhat Enterprise Linux. Its CVSS base score is 6.5 (Medium).
Operationally, ranked at the 24.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-40314
Vulnerability details
A flaw was found in GLib. A buffer over-read can occur in the g_regex_replace function when used with the `G_REGEX_RAW` compile flag and case-change replacement escapes because the string_append function processes matched substrings using UTF-8 functions that assume valid UTF-8…
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input, even when the string is treated as raw bytes. This vulnerability can cause a minor information disclosure of 1-5 bytes and a denial of service when the buffer over-read crosses a page boundary.
- CWE(s)
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Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.