Buffer overflow in Vstarcam O-Kam Client
CVE-2026-120336
A vulnerability was found in VStarcam O-KAM Client 1.3.3.32. Affected by this vulnerability is the function FUN_10003EA0 in the library DevDll_925.dll. The manipulation results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: Buffer Overflow
Published .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Vstarcam O-Kam Client — versions 1.3.3.32
Weakness classification (CWE)
References
- vuldb.com/vuln/429661 (technical-description, vdb-entry)
- vuldb.com/vuln/429661/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-120336 (third-party-advisory)
- vuldb.com/submit/1016301 (third-party-advisory)
- gist.github.com/Ishanoshada/f6345a42a46e1345e6c7400aac311d77 (exploit)
Frequently asked questions
- What is CVE-2026-120336?
- CVE-2026-120336 is a high-severity vulnerability in Vstarcam O-Kam Client, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.3/10. Published 2026-11-02.
- How severe is CVE-2026-120336?
- High severity. CVSS v3 base score is 7.3 out of 10.