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CVE-2021-42079

17
FAUCET Score

CVE-2021-42079 describes a Server-Side Request Forgery (SSRF) vulnerability in osnexus quantastor, allowing an authenticated administrator to initiate POST requests to arbitrary internal or external systems. The vulnerability has a CVSS score of 4.9 (MEDIUM), indicating a network attack vector with low complexity, requiring high privileges, and potentially leading to high confidentiality impact without affecting integrity or availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

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

6.2MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.7
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.69%
Probability of exploitation in next 30 days
EPSS Percentile
49.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0069 is in the 49th percentile among its peer group of 3,565 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 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
cisrt.divd.nl / DIVD-2021-00020
csirt.divd.nl / CVE-2021-42079
Third Party Advisory
osnexus.com / products/software-defined-storage
Product
wbsec.nl / osnexus
Third Party Advisory