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CVE-2022-28118

32
FAUCET Score

CVE-2022-28118 is a critical arbitrary code execution vulnerability affecting SiteServer CMS v7.x, allowing unauthenticated attackers to execute code via crafted plug-ins. With a CVSS score of 9.8, this vulnerability presents a high risk due to its network-based attack vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. While no public exploits, Metasploit modules, or Nuclei templates are currently available, and there's no evidence of active exploitation or significant community discussion, its critical severity warrants immediate attention for affected organizations.

Impacted Technologies

VendorProductVersion(s)CPE
>= 7.0.0, <= 7.1.2CPE matchmatch criteria
cpe:2.3:a:sscms:siteserver_cms:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.60%
Probability of exploitation in next 30 days
EPSS Percentile
83.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0260 is in the 74th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

npmGHSA-q469-j32f-h7vmcritical

RCE in SiteServer CMS

May 4, 2022

References

github.com / Richard-Tang/SSCMS-PluginShell/blob/main/Detail.md
ExploitThird Party Advisory
github.com / siteserver/cms
ProductThird Party Advisory
github.com / siteserver/cms/issues/3386
ExploitIssue TrackingThird Party Advisory