CVE-2020-3920
CVE-2020-3920 is a high-severity vulnerability in Unisoon Ultralog Express Firmware with a CVSS 3.x base score of 8.1. 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-306.
Key facts
- Severity: High (CVSS 3.x base score 8.1)
- CVSS v2: 5.5
- EPSS exploit prediction: 1% (53rd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-306
- Affected product: Unisoon Ultralog Express Firmware
- Published:
- Last modified:
Description
UltraLog Express device management interface does not properly perform access authentication in some specific pages/functions. Any user can access the privileged page to manage accounts through specific system directory.
Frequently asked questions
- What is CVE-2020-3920?
- UltraLog Express device management interface does not properly perform access authentication in some specific pages/functions. Any user can access the privileged page to manage accounts through specific system directory.
- How severe is CVE-2020-3920?
- CVE-2020-3920 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
- Is CVE-2020-3920 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-3920?
- CVE-2020-3920 affects Unisoon Ultralog Express Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-3920?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2020-3920 published?
- CVE-2020-3920 was published on 2020-03-27 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:unisoon:ultralog_express_firmware:1.4.0:*:*:*:*:*:*:*
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