A command injection vulnerability in the CGI program of Zyxel NR7101 firmware prior to V1.15(ACCC.3)C0, which could allow an authenticated…

published 2023-01-11 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-46429

cvss: 5.4; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits: 0; none known

A command injection vulnerability in the CGI program of Zyxel NR7101 firmware prior to V1.15(ACCC.3)C0, which could allow an authenticated attacker to execute some OS commands on a vulnerable device by sending a crafted HTTP request.

Patch / fix

fixed in 9

zyxel lte7480-m804_firmware 1.00\(abra.6\)c0
zyxel lte7490-m904_firmware 1.00\(abqy.5\)c0
zyxel nebula_nr5101_firmware 1.15\(accg.3\)c0
zyxel nebula_nr7101_firmware 1.15\(accc.3\)c0
zyxel nr5101_firmware 1.00\(abvc.6\)c0
zyxel nr7101_firmware 1.00\(abuv.7\)c0
zyxel nr7102_firmware 1.00\(abyd.2\)c0
zyxel ex3510-b0_firmware 5.17\(abup.7\)c0
zyxel ex5510-b0_firmware 5.17\(abqx.7\)c0

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 19 mo ago (2025-04-08)

Exploit prediction

1.12% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
NVD	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Zyxel NR7101 firmware

Classification

Weakness

CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

zyxel.com /global/en/support/security-advisories/zyxel-security-advisory-for-command-injection-and-buffer-overflow-vulne
vendor-advisory

Sources

CVE List CVE-2022-43390
NVD CVE-2022-43390

Fencer Intel 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.

Summary