CVE-2021-28153

MEDIUM
5.3
CVSS Score
Published: March 11, 2021 at 09:04 PM UTC
Updated: October 14, 2026 at 12:17 PM UTC
4 products affected across 4 vendorsDebian LinuxFedoraGLib

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Severity
MEDIUM5.3
Exploit prediction
EPSS 3%

Description

An issue was discovered in GNOME GLib before 2.66.8. When g_file_replace() is used with G_FILE_CREATE_REPLACE_DESTINATION to replace a path that is a dangling symlink, it incorrectly also creates the target of the symlink as an empty file, which could conceivably have security relevance if the symlink is attacker-controlled. (If the path is a symlink to a file that already exists, then the contents of that file correctly remain unchanged.)

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.66.8
Affected range stops below 2.66.8, so it looks safe — our inference, not a vendor statement

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-59

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