How severe is CVE-2017-20039?

CVE-2017-20039 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-20039 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-20039?

CVE-2017-20039 affects Sicunet Access Control. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-20039?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2017-20039 published?

CVE-2017-20039 was published on 2022-06-11 and last updated on 2026-06-17.

CVE-2017-20039

CVE-2017-20039 is a critical-severity vulnerability in Sicunet Access Control with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-798.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Sicunet Access Control
Published: 2022-06-11
Last modified: 2026-06-17

Description

A vulnerability was found in SICUNET Access Controller 0.32-05z. It has been classified as very critical. This affects an unknown part. The manipulation leads to weak authentication. It is possible to initiate the attack remotely.

Frequently asked questions

What is CVE-2017-20039?: A vulnerability was found in SICUNET Access Controller 0.32-05z. It has been classified as very critical. This affects an unknown part. The manipulation leads to weak authentication. It is possible to initiate the attack remotely.
How severe is CVE-2017-20039?: CVE-2017-20039 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-20039 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-20039?: CVE-2017-20039 affects Sicunet Access Control. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-20039?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2017-20039 published?: CVE-2017-20039 was published on 2022-06-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:sicunet:access_control:0.32-05z:*:*:*:*:*:*:*

More vulnerabilities in Sicunet Access Control

CVE-2017-20038 — Medium (CVSS 6.3): A vulnerability was found in SICUNET Access Controller 0.32-05z and classified as critical. Affected by this issue is…
CVE-2017-20037 — Medium (CVSS 6.3): A vulnerability has been found in SICUNET Access Controller 0.32-05z and classified as critical. Affected by this…
CVE-2017-20040 — Medium (CVSS 5.9): A vulnerability was found in SICUNET Access Controller 0.32-05z. It has been declared as problematic. This…

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