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CVE-2022-43390

28
FAUCET Score

CVE-2022-43390 is a high-severity command injection vulnerability affecting Zyxel NR7101 firmware versions prior to V1.15(ACCC.3)C0. An authenticated attacker can exploit this flaw by sending a crafted HTTP request to execute arbitrary OS commands on the vulnerable device. With a CVSS score of 8.8 (HIGH), this vulnerability allows for complete compromise of confidentiality, integrity, and availability. There is currently no public exploit code available, nor is there evidence of active exploitation or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.00\(abra.6\)c0CPE matchmatch criteria
cpe:2.3:o:zyxel:lte7480-m804_firmware:*:*:*:*:*:*:*:*
< 1.00\(abqy.5\)c0CPE matchmatch criteria
cpe:2.3:o:zyxel:lte7490-m904_firmware:*:*:*:*:*:*:*:*
< 1.15\(accg.3\)c0CPE matchmatch criteria
cpe:2.3:o:zyxel:nebula_nr5101_firmware:*:*:*:*:*:*:*:*
< 1.15\(accc.3\)c0CPE matchmatch criteria
cpe:2.3:o:zyxel:nebula_nr7101_firmware:*:*:*:*:*:*:*:*
< 1.00\(abvc.6\)c0CPE matchmatch criteria
cpe:2.3:o:zyxel:nr5101_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.08%
Probability of exploitation in next 30 days
EPSS Percentile
61.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0108 is in the 58th percentile among its peer group of 17,822 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

zyxel.com / global/en/support/security-advisories/zyxel-security-advisory-for-command-injection-and-buffer-overflow-vulnerabilities-of-cpe-fiber-onts-and-wifi-extenders
Vendor Advisory