CVE-2021-30490 json
upsMonitor in ViewPower (aka ViewPowerHTML) 1.04-21012 through 1.04-21353 has insecure permissions for the service binary that enable an Au…
published 2022-08-16 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-17412
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 22%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- 0x90.zone https://www.0x90.zone/binary/reverse/exploitation/2020/08/16/Privilege-Escalation-ViewPower.html referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Classification
- Weakness
-
- CWE-276 Incorrect Default Permissions
References
-
0x90.zone
/binary/reverse/exploitation/2020/08/16/Privilege-Escalation-ViewPower.html
exploit, patch, technical-description, third-party-advisory
-
power-software-download.com
/viewpower.html
vendor-advisory
Sources
- CVE List CVE-2021-30490
- NVD CVE-2021-30490
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.