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Fencer Vulns
high 7.8

CVE-2020-35457 json

GNOME GLib before 2.65.3 has an integer overflow, that might lead to an out-of-bounds write, in...

published 2020-12-14 5 y ago modified 2026-07-23 3 mo ago also EUVD-2020-23131 , JLSEC-2025-155

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits
0
none known

Summary

GNOME GLib before 2.65.3 has an integer overflow, that might lead to an out-of-bounds write, in g_option_group_add_entries. NOTE: the vendor's position is "Realistically this is not a security issue. The standard pattern is for callers to provide a static list of option entries in a fixed number of calls to g_option_group_add_entries()." The researcher states that this pattern is undocumented

Patch / fix

  • julia Glib_jll 2.68.1+0
  • gnome glib 2.65.3
  • glib2.0 Debian 14, Debian 13, Debian 12 2.66.0-1

debian advisories DEBIAN-CVE-2020-35457

  • glib CBL-Mariner 2.0 2.60.1-5

azure linux advisories AZL-6435

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Exploit prediction

0.57% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • gitlab.gnome.org https://gitlab.gnome.org/GNOME/glib/-/issues/2197 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P
OSV 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
julia Glib_jll
<2.68.1+0
2.68.1+0

Classification

Weakness

References

Sources

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