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CVE-2021-40925

20
FAUCET Score

CVE-2021-40925 describes a Cross-Site Scripting (XSS) vulnerability in dompdf/dompdf/www/demo.php within faveo-helpdesk v1.11.0 and earlier. This flaw allows remote attackers to inject arbitrary web script or HTML via the $_SERVER["PHP_SELF"] parameter. Rated 6.1 MEDIUM, the vulnerability has a network attack vector, low attack complexity, and requires user interaction, potentially leading to limited confidentiality and integrity impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage for this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.11.0CPE matchmatch criteria
cpe:2.3:a:faveohelpdesk:faveo:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.84%
Probability of exploitation in next 30 days
EPSS Percentile
54.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0084 is in the 64th percentile among its peer group of 26,219 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 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 / ladybirdweb/faveo-helpdesk
Third Party Advisory
github.com / ladybirdweb/faveo-helpdesk/issues/5423
ExploitIssue TrackingThird Party Advisory