CVE-2021-3273
Nagios XI below 5.7 is affected by code injection in the /nagiosxi/admin/graphtemplates.php...
Nagios XI below 5.7 is affected by code injection in the /nagiosxi/admin/graphtemplates.php component. To exploit this vulnerability, someone must have an admin user account in Nagios XI's web system.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
Nagios XI below 5.7 is affected by code injection in the /nagiosxi/admin/graphtemplates.php component. To exploit this vulnerability, someone must have an admin user account in Nagios XI's web system.
- Record
CVE-2021-3273- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 9.0 High
AV:N/AC:L/Au:S/C:C/I:C/A:C - Weakness
- CWE-94
- Updated
- 2026-11-02
CVE ListNo score
Nagios XI below 5.7 is affected by code injection in the /nagiosxi/admin/graphtemplates.php component. To exploit this vulnerability, someone must have an admin user account in Nagios XI's web system.
- Record
CVE-2021-3273- Updated
- 2026-11-02
EUVDEUVD-2021-26611No score
Nagios XI below 5.7 is affected by code injection in the /nagiosxi/admin/graphtemplates.php component. To exploit this vulnerability, someone must have an admin user account in Nagios XI's web system.
- Record
EUVD-2021-26611- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-jj7x-vc24-mq4rNo score
Nagios XI below 5.7 is affected by code injection in the /nagiosxi/admin/graphtemplates.php...
Nagios XI below 5.7 is affected by code injection in the /nagiosxi/admin/graphtemplates.php component. To exploit this vulnerability, someone must have an admin user account in Nagios XI's web system.
- Record
GHSA-jj7x-vc24-mq4r- Weakness
- CWE-94
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-3273 is a high vulnerability (CVSS 7.2) in Nagios Xi, published February 25, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 7.21%, the 94th percentile. No source names a fixed version.