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CVE-2021-27513

41
FAUCET Score

CVE-2021-27513 is a critical arbitrary file upload vulnerability affecting EyesOfNetwork version 5.3-10, specifically within the admin_ITSM module. This flaw allows remote authenticated users to upload malicious .xml.php files due to insufficient input validation. With a CVSS score of 8.8 (High), successful exploitation could lead to complete compromise of confidentiality, integrity, and availability of the affected system. While no public exploit code or active exploitation has been observed, its high EPSS score and FAUCET Risk Score indicate a significant potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
5.3-10CPE matchmatch criteria
cpe:2.3:a:eyesofnetwork:eyesofnetwork:5.3-10:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
28.39%
Probability of exploitation in next 30 days
EPSS Percentile
97.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.2839 is in the 97th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 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

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / ArianeBlow/exploit-eyesofnetwork5.3.10/blob/main/PoC-BruteForceID-arbitraty-file-upload-RCE-PrivEsc.py
ExploitThird Party Advisory
github.com / EyesOfNetworkCommunity/eonweb/issues/87
PatchThird Party Advisory