CVE-2021-27218
7.5 · HIGHOverview
CVE-2021-27218 is a high-severity vulnerability affecting gnome glib. It was published on February 15, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
An issue was discovered in GNOME GLib before 2.66.7 and 2.67.x before 2.67.4. If g_byte_array_new_take() was called with a buffer of 4GB or more on a 64-bit platform, the length would be truncated modulo 2**32, causing unintended length truncation.
Remediation
Check the references section for vendor advisories and patches from gnome. Update glib to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| gnome | glib | >= 0, < 2.66.7 | Affected |
References
Frequently Asked Questions
What is CVE-2021-27218?
CVE-2021-27218 is a high-severity vulnerability affecting gnome glib. It was published on February 15, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2021-27218?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-27218?
Check the references section for vendor advisories and patches from gnome. Update glib to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-27218?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-27218 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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