CVE-2022-40870
CVSS v3
8.1
HIGH
EPSS Score
2.1 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
The Web Client of Parallels Remote Application Server v18.0 is vulnerable to Host Header Injection attacks. This vulnerability allows attackers to execute arbitrary commands via a crafted payload injected into the Host header.
Technical details
- Published
- 2022-11-23
Frequently asked questions
What is CVE-2022-40870?
The Web Client of Parallels Remote Application Server v18.0 is vulnerable to Host Header Injection attacks. This vulnerability allows attackers to execute arbitrary commands via a crafted payload injected into the Host header.
Is CVE-2022-40870 actively exploited?
Active exploitation of CVE-2022-40870 has not been confirmed. Its EPSS score was 2.1% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2022-40870?
CVE-2022-40870 has a CVSS v3 base score of 8.1 (HIGH severity).
Is CVE-2022-40870 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.
No credit card required · 500 free checks/month · Free API key
Other 2022 vulnerabilities worth triaging
Ranked by exploit probability (EPSS).