CVE-2021-21327
MEDIUMEPSS 82th pctlDescription
GLPI is an open-source asset and IT management software package that provides ITIL Service Desk features, licenses tracking and software auditing. In GLPI before version 9.5.4 non-authenticated user can remotely instantiate object of any class existing in the GLPI environment that can be used to carry out malicious attacks, or to start a “POP chain”. As an example of direct impact, this vulnerability affects integrity of the GLPI core platform and third-party plugins runtime misusing classes which implement some sensitive operations in their constructors or destructors. This is fixed in version 9.5.4.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N
Exploit Intelligence
Elevated risk: more likely to be exploited than 82% of all known CVEs.
References
Related Vulnerabilities
Other CWE-862 (Missing Authorization) vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2021-39226 | Critical | 9.8 | 100% | KEV | Fix |
| CVE-2022-0543 | Critical | 10.0 | 99% | KEV | Fix |
| CVE-2021-21978 | Critical | 9.8 | 99% | - | Fix |
| CVE-2023-52163 | High | 8.8 | 97% | KEV | - |
| CVE-2022-1329 | High | 8.8 | 93% | - | - |
| CVE-2023-6875 | Critical | 9.8 | 90% | - | - |
Common questions
How do I fix CVE-2021-21327?
Upgrade glpi to 9.5.4 or later.
Is CVE-2021-21327 being actively exploited?
Not that we know of. CVE-2021-21327 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 2.3% is the estimated probability that it will be exploited in the next 30 days. That is higher than 82% of all scored CVEs.
How severe is CVE-2021-21327?
CVE-2021-21327 has a CVSS v3 base score of 6.8, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2021-21327 affect?
Published advisories record a fix for glpi (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
Embed a live status badge for CVE-2021-21327
Markdown
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TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.
This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.