CVE-2021-25296

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2022-01-18. Federal remediation due 2022-02-01.

SSVC decision

• ExploitationactiveCISA reports credible evidence of active exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

72.18% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 99.4% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Analyzed. NVD last modified this record on 2026-07-09.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-02-15 00:00Z5 YR AGO

Last updated

2026-07-09 00:12Z1 MO AGO

Reserved

2021-01-18

Assigning CNA

mitre

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

No CWE assigned

Data version

5.2

Document digest

fa361f95d441a26feaa45e1e73c8b06ee2e87963232e087d209f3ed5077a7a68

• assets.nagios.comhttps://assets.nagios.com/downloads/nagiosxi/versions.php
• github.comhttps://github.com/fs0c-sh/nagios-xi-5.7.5-bugs/blob/main/README.md
• packetstormsecurity.comhttp://packetstormsecurity.com/files/161561/Nagios-XI-5.7.5-Remote-Code-Execution.html
• packetstormsecurity.comhttp://packetstormsecurity.com/files/170924/Nagios-XI-5.7.5-Remote-Code-Execution.html
• www.fastly.comhttps://www.fastly.com/blog/anatomy-of-a-command-injection-cve-2021-25296-7-8-with-metasploit-module-and
• www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-25296government-resource