Vulnerability in Microsoft Windows
CVE-2021-30490
upsMonitor in ViewPower (aka ViewPowerHTML) 1.04-21012 through 1.04-21353 has insecure permissions for the service binary that enable an Authenticated User to modify files, allowing for privilege escalation.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (20.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 20.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.power-software-download.com/viewpower.html (Vendor Advisory)
- www.0x90.zone/binary/reverse/exploitation/2020/08/16/Privilege-Escalation-ViewP… (Technical Description, Exploit, Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-30490?
- CVE-2021-30490 is a high-severity vulnerability in Microsoft Windows, classified under Incorrect Default Permissions. CVSS score: 7.8/10. Published 2022-08-16.
- How severe is CVE-2021-30490?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2021-30490 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.