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CVE-2022-40870

26
FAUCET Score

CVE-2022-40870 describes a Host Header Injection vulnerability in the Web Client of Parallels Remote Application Server v18.0. This high-severity flaw (CVSS 8.1) allows unauthenticated attackers to execute arbitrary commands by injecting a crafted payload into the Host header, potentially leading to full system compromise. While the vulnerability is critical, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
18.0CPE matchmatch criteria
cpe:2.3:a:parallels:remote_application_server:18.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.05%
Probability of exploitation in next 30 days
EPSS Percentile
60.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0105 is in the 24th percentile among its peer group of 8,920 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / IthacaLabs/Parallels/blob/main/ParallelsRemoteApplicationServer/HHI_CVE-2022-40870.txt
ExploitThird Party Advisory
github.com / IthacaLabs/Parallels/tree/main/ParallelsRemoteApplicationServer
ExploitThird Party Advisory