CVE-2022-36537: in the CISA KEV catalogue
ZK Framework AuUploader Unspecified Vulnerability. CISA added CVE-2022-36537 to the Known Exploited Vulnerabilities catalogue on 2023-02-27 with a default due date of 2023-03-20. Known ransomware campaign use: Known. Forensic triage flag: No.
ZK Framework AuUploader servlets contain an unspecified vulnerability that could allow an attacker to retrieve the content of a file located in the web context. The ZK Framework is an open-source Java framework. This vulnerability can impact multiple products, including but not limited to ConnectWise R1Soft Server Backup Manager. (CISA description)
- Vendor / product
- ZK Framework AuUploader
- CWE
- CWE-441
- CISA required action
- Apply updates per vendor instructions.
- EPSS
- 95%, percentile 99 (scored 2026-11-03)
EPSS puts about 95 in 100 odds (95%) on exploitation activity being observed in the next 30 days. Its score is higher than or equal to that of 99% of scored CVEs. This is a model estimate about exploitation anywhere, not about your environment.
Vendor and reference links (from CISA)
Your own deadline under CISA BOD 26-04 depends on exposure, automatability and technical impact: work it out with the BOD 26-04 calculator.
Frequently asked questions
Is CVE-2022-36537 in the CISA KEV catalogue?
Yes. CISA added CVE-2022-36537 (ZK Framework AuUploader Unspecified Vulnerability) to the Known Exploited Vulnerabilities catalogue on 2023-02-27. CISA's default due date for it is 2023-03-20.
Is CVE-2022-36537 used in ransomware attacks?
CISA marks known ransomware campaign use as Known for CVE-2022-36537.
What should I do about CVE-2022-36537?
CISA's required action: Apply updates per vendor instructions.
Sources
- CISA, Known Exploited Vulnerabilities Catalog (accessed 2026-11-03)
- FIRST, Exploit Prediction Scoring System (EPSS) (EPSS by FIRST; scores generated by Empirical Security)
- NVD record for CVE-2022-36537