Vulnerability Details : CVE-2022-43389
A buffer overflow vulnerability in the library of the web server in Zyxel NR7101 firmware prior to V1.15(ACCC.3)C0, which could allow an unauthenticated attacker to execute some OS commands or to cause denial-of-service (DoS) conditions on a vulnerable device.
Vulnerability category: OverflowDenial of service
Products affected by CVE-2022-43389
- cpe:2.3:o:zyxel:ep240p_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:pmg5317-t20b_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:pmg5617ga_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:pmg5622ga_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:lte7480-m804_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:nr7101_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:nr7102_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:lte7490-m904_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:nebula_nr7101_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:pm7320-b0_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:lte3202-m437_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:lte3316-m604_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:nebula_fwa510_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:nebula_fwa710_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:nr5103_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:nr5103e_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:nr7103_firmware:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-43389
0.23%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 61 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-43389
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST | |
|
8.6
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H |
3.9
|
4.7
|
Zyxel Corporation |
CWE ids for CVE-2022-43389
-
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.Assigned by:
- nvd@nist.gov (Primary)
- security@zyxel.com.tw (Secondary)
References for CVE-2022-43389
-
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-command-injection-and-buffer-overflow-vulnerabilities-of-cpe-fiber-onts-and-wifi-extenders
Zyxel security advisory for command injection and buffer overflow vulnerabilities of CPE, fiber ONTs, and WiFi extenders | Zyxel NetworksVendor Advisory
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