CVE-2021-28269: Soyal Technology 701Client 9.0.1 is vulnerable to Insecure permissions via client.exe binary with Authenticate

This month

HIGH 8.8DOWNGRADE

CVE-2021-28269 is a high-severity flaw (CVSS 8.8) affecting 701client. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Soyal Technology 701Client 9.0.1 is vulnerable to Insecure permissions via client.exe binary with Authenticated Users group with Full permissions.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.9% (top 21%)
CISA exploited list	No
Weakness	CWE-732
Published	2021-04-27
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: soyal

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-04-27 15:15 UTCPublished CVE record published
2026-06-17 03:46 UTCUpdated Record last modified

soyal 701client DOWNGRADE

Affected: 9.0.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 9.0.1

1. Check installed version

apt-cache policy 701client || rpm -q 701client || 701client --version

2. No fixed release: DOWNGRADE to a release before 9.0.1 (Debian / Ubuntu)

apt-cache madison 701client sudo apt install 701client=<VERSION_BEFORE_9.0.1> sudo apt-mark hold 701client

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list 701client sudo dnf downgrade 701client-<VERSION_BEFORE_9.0.1> sudo dnf versionlock add 701client

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-28269?

701client: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-28269 being exploited?

CVE-2021-28269 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-28269 affect?

CVE-2021-28269 affects 701client. Severity is high (CVSS 8.8). Soyal Technology 701Client 9.0.1 is vulnerable to Insecure permissions via client.exe binary with Authenticated Users group with Full permissions.

How urgent is CVE-2021-28269?

Priority 56/100. High severity; Public exploit reference

References

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