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CVE-2021-42165

45
FAUCET Score

CVE-2021-42165 is a critical command injection vulnerability affecting MitraStar GPT-2541GNAC-N1 devices, allowing remote authenticated attackers to achieve root access due to improper sanitization of the "path" parameter. With a CVSS score of 8.8 (HIGH), this flaw presents a low-complexity attack vector that can lead to complete compromise of confidentiality, integrity, and availability. While not listed on CISA's KEV catalog, a public exploit is available on ExploitDB, indicating potential for exploitation. Despite the public exploit, there is currently minimal community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
br_g3.5_100vnz0b33CPE matchmatch criteria
cpe:2.3:o:mitrastar:gpt-2541gnac-n1_firmware:br_g3.5_100vnz0b33:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
14.10%
Probability of exploitation in next 30 days
EPSS Percentile
96.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-50351 · Sep 29, 2021
This CVE's current EPSS score of 0.1410 is in the 95th percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / leoservalli/Privilege-escalation-MitraStar/blob/main/README.md
ExploitThird Party Advisory
packetstormsecurity.com / files/164333/Mitrastar-GPT-2541GNAC-N1-Privilege-Escalation.html
ExploitThird Party AdvisoryVDB Entry
exploit-db.com / exploits/50351
ExploitThird Party AdvisoryVDB Entry