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CVE-2021-30203

28
FAUCET Score

CVE-2021-30203 is a reflected cross-site scripting (XSS) vulnerability found in dzzoffice 2.02.1_SC_UTF8, specifically within the "zero" parameter. This allows an unauthenticated attacker to inject and execute arbitrary web scripts or HTML in a user's browser. Rated 6.1 MEDIUM, the vulnerability requires user interaction (UI:R) but has low attack complexity (AC:L) and can lead to limited impact on confidentiality and integrity (C:L/I:L). While not actively exploited (KEV: No) and lacking public exploit code like Metasploit or ExploitDB, a Nuclei template exists, and there is minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2.02.1CPE matchmatch criteria
cpe:2.3:a:dzzoffice:dzzoffice:2.02.1:*:*:*:*:*:*:*

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
0.60%
Probability of exploitation in next 30 days
EPSS Percentile
44.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2021-30203 · Aug 12, 2022
This CVE's current EPSS score of 0.0060 is in the 48th percentile among its peer group of 26,221 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 / zyx0814/dzzoffice/issues/183
ExploitIssue Tracking