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Vulnerabilities

Vulnerability · CVE-2021-28153

An issue was discovered in GNOME GLib before 2.66.8.

Published Mar 11, 2021 · catalog updated Oct 14, 2026 · An issue was discovered

Check if you run it

No confirmed exploitation is on record for CVE-2021-28153. EPSS is 2.71%. Act only if a listed version of An issue was discovered is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (An issue was discovered).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
2.71%
Remediation
Advisory link
Affected products
cpe broadcom/brocade fabric operating system firmware · cpe debian/debian linux · cpe fedoraproject/fedora · cpe gnome/glib

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.)

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe broadcom/brocade fabric operating system firmwareversion unspecified
  • cpe debian/debian linux9.0
  • cpe fedoraproject/fedora33
  • cpe gnome/glibversion unspecified

How to fix CVE-2021-28153

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2021-28153. EPSS is 2.71%. Act only if a listed version of An issue was discovered is installed.

Which versions are affected?

Compare what you have installed with debian/debian linux 9.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-59: Link Following. EPSS 2.71%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 11, 2021 · NIST NVD

    Detected

    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 content

  2. Oct 14, 2026 · NIST NVD

    Updated

    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 content

Sources

  • CVE.orgVulnerability recordCVE-2021-28153

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2021-28153

    30-day exploitation probability 2.7%

    first.org
  • NIST NVDVulnerability recordCVE-2021-28153

    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 re

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.