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CVE-2021-28271

27
FAUCET Score

CVE-2021-28271 is an elevation of privileges vulnerability affecting Soyal Technologies SOYAL 701Server 9.0.1 and related products (701ClientSQL, 701ServerSQL). It stems from improper file permissions, allowing authenticated users to replace executable files. This vulnerability carries a CVSS score of 8.8 (High), indicating a severe risk. An attacker can exploit this remotely with low complexity and user interaction, potentially leading to full compromise of confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE. It is not listed on the CISA KEV catalog or the Hot List.

Impacted Technologies

VendorProductVersion(s)CPE
>= 10.0, < 10.2CPE matchmatch criteria
cpe:2.3:a:soyal:701clientsql:*:*:*:*:*:*:*:*
<= 9.0.2CPE matchmatch criteria
cpe:2.3:a:soyal:701server:*:*:*:*:*:*:*:*
>= 10.0, < 10.2CPE matchmatch criteria
cpe:2.3:a:soyal:701serversql:*:*:*:*:*:*:*:*

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
1.87%
Probability of exploitation in next 30 days
EPSS Percentile
77.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0187 is in the 75th percentile among its peer group of 17,822 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

Remediation records are not available for this CVE.

References

exploit-db.com / exploits/49678
ExploitThird Party AdvisoryVDB Entry
zeroscience.mk / en/vulnerabilities
ExploitThird Party Advisory
zeroscience.mk / en/vulnerabilities/ZSL-2021-5633.php
ExploitThird Party Advisory