Cyber Resilience

CVE-2022-43392

Medium

Published: 11 January 2023

Published
11 January 2023
Modified
25 February 2026
KEV Added
—
Patch
—
CVSS Score v3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0056 68.7th percentile
Risk Priority 13 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2022-43392 is a medium-severity Classic Buffer Overflow (CWE-120) vulnerability in Zyxel Lte3301-Plus Firmware. Its CVSS base score is 6.5 (Medium).

Operationally, ranked in the top 31.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

A buffer overflow vulnerability in the parameter of web server in Zyxel NR7101 firmware prior to V1.15(ACCC.3)C0, which could allow an authenticated attacker to cause denial-of-service (DoS) conditions by sending a crafted authorization request.

CWE(s)
CWE-120

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

zyxel
lte3301-plus firmware
all versions
zyxel
lte5388-m804 firmware
all versions
zyxel
lte5398-m904 firmware
all versions
zyxel
lte7240-m403 firmware
all versions
zyxel
lte7461-m602 firmware
all versions
zyxel
lte7480-m804 firmware
≤ 1.00\(abra.6\)c0
zyxel
lte7480-s905 firmware
all versions
zyxel
lte7485-s905 firmware
all versions
zyxel
lte7490-m904 firmware
≤ 1.00\(abqy.5\)c0
zyxel
nebula lte3301-plus firmware
≤ 1.15\(acca.3\)c0
+38 more product configuration(s) — see NVD for full list

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-27 Platform-independent Applications
addresses: CWE-120

Platform-independent managed code eliminates the need for unchecked native buffer copies that are the root cause of classic buffer overflows.

References