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CVE-2021-42082

23
FAUCET Score

CVE-2021-42082 is a local privilege escalation vulnerability affecting OSNexus QuantaStor, allowing authenticated local users to execute arbitrary scripts with root privileges. Rated 7.8 HIGH, this flaw has a low attack complexity and requires local access, but can lead to full compromise of confidentiality, integrity, and availability. While no active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB) has been observed, and community discussion is minimal, the potential for significant impact remains.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.0.0.355CPE matchmatch criteria
cpe:2.3:a:osnexus:quantastor:*:*:*:*:*:*:*:*
>= 0, < 6.0.0.355CPE match
cpe:2.3:a:osnexus:quantastor:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.18%
Probability of exploitation in next 30 days
EPSS Percentile
8.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0019 is in the 32nd percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

divd.nl / DIVD-2021-00020
csirt.divd.nl / CVE-2021-42082
Third Party Advisory
csirt.divd.nl / DIVD-2021-00020
osnexus.com / products/software-defined-storage
Product
wbsec.nl / osnexus
Third Party Advisory