Deserialization in Qognify Ocularis
CVE-2020-27868
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Qognify Ocularis 5.9.0.395. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of serialized objects provided to the EventCoordinator endpoint. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-11257.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.818 (99.6th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.818 · newest: 0.818 · change: 0.000
Affected products
- Qognify Ocularis — versions 5.9.0.395
Weakness classification (CWE)
References
- www.zerodayinitiative.com/advisories/ZDI-20-1453/ (VDB Entry, Third Party Advisory)
- www.qognify.com/support-training/software-downloads/ (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-27868?
- CVE-2020-27868 is a critical-severity vulnerability in Qognify Ocularis, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2021-02-12.
- How severe is CVE-2020-27868?
- Critical severity. CVSS v3 base score is 9.8 out of 10.