CVE-2017-20040: A vulnerability was found in SICUNET Access Controller 0.32-05z

Routine

MEDIUM 5.9DOWNGRADE

CVE-2017-20040 is a medium-severity flaw (CVSS 5.9) affecting access control. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was found in SICUNET Access Controller 0.32-05z. It has been declared as problematic. This vulnerability affects unknown code of the component Password Storage. The manipulation leads to weak encryption. Attacking locally is a requirement.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.1% (top 99%)
CISA exploited list	No
Weakness	CWE-312
Published	2022-06-11
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: sicunet

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

Am I affected?

Timeline

2022-06-11 10:15 UTCPublished CVE record published
2026-06-17 01:14 UTCUpdated Record last modified

sicunet access control DOWNGRADE

Affected: 0.32-05z

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.32-05z

1. Check installed version

apt-cache policy access-control || rpm -q access-control || access-control --version

2. No fixed release: DOWNGRADE to a release before 0.32-05z (Debian / Ubuntu)

apt-cache madison access-control sudo apt install access-control=<VERSION_BEFORE_0.32-05z> sudo apt-mark hold access-control

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

dnf --showduplicates list access-control sudo dnf downgrade access-control-<VERSION_BEFORE_0.32-05z> sudo dnf versionlock add access-control

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-2017-20040?

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

Is CVE-2017-20040 being exploited?

CVE-2017-20040 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-2017-20040 affect?

CVE-2017-20040 affects access control. Severity is medium (CVSS 5.9). A vulnerability was found in SICUNET Access Controller 0.32-05z. It has been declared as problematic. This vulnerability affects unknown code of the component Password Storage. The manipulation leads to weak encryption. Attacking locally is

How urgent is CVE-2017-20040?

Priority 21/100. No elevated risk signals yet.

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CVE-2017-20039 CRITICAL 9.8 DOWNGRADE A vulnerability was found in SICUNET Access Controller 0.32-05z
CVE-2017-20038 MEDIUM 6.3 DOWNGRADE A vulnerability was found in SICUNET Access Controller 0.32-05z and classified as critical
CVE-2017-20037 MEDIUM 6.3 DOWNGRADE A vulnerability has been found in SICUNET Access Controller 0.32-05z and classified as critical

References

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