Buffer overflow in Commax Co., Ltd. Ums Client Activex Control
CVE-2021-47705
COMMAX UMS Client ActiveX Control 1.7.0.2 contains a heap-based buffer overflow vulnerability that allows attackers to execute arbitrary code by providing excessively long string arrays through multiple functions. Attackers can exploit improper boundary validation in CNC_Ctrl.dll to cause heap corruption and potentially gain system-level access.
Vulnerability class: Buffer Overflow
Published · last modified .
EPSS exploit prediction
EPSS: 0.005 (39.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000
Affected products
- Commax Co., Ltd. Ums Client Activex Control — versions 1.7.0.2
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/50232 (exploit)
- www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5664.php (third-party-advisory)
- www.commax.com (technical-description)
- www.vulncheck.com/advisories/commax-ums-client-activex-control-cnc-ctrl-dll-hea… (third-party-advisory)