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Medium severity · published Jan 11, 2023
CVE-2022-43391
A buffer overflow vulnerability in the parameter of the CGI program in Zyxel NR7101 firmware prior to V1.15(ACCC.3)C0, which could allow an authenticated attacker to cause…
6.5
CVSS
0.7%
EPSS
No
On KEV
Description
A buffer overflow vulnerability in the parameter of the CGI program 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 HTTP request.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 54% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AF
Ax7501-b0 Firmware · Zyxel
All versions, or not specified · source: NVD
DF
Dx3301-t0 Firmware · Zyxel
All versions, or not specified · source: NVD
DF
Dx4510-b1 Firmware · Zyxel
All versions, or not specified · source: NVD
DF
Dx5401-b0 Firmware · Zyxel
All versions, or not specified · source: NVD
EF
Emg3525-t50b Firmware · Zyxel
All versions, or not specified · source: NVD
EF
Emg5523-t50b Firmware · Zyxel
All versions, or not specified · source: NVD
EF
Emg5723-t50k Firmware · Zyxel
All versions, or not specified · source: NVD
EF
Ex3301-t0 Firmware · Zyxel
All versions, or not specified · source: NVD
EF
Ex3510-b0 Firmware · Zyxel
before 5.17\(abup.7\)c0 · source: NVD
EF
Ex5401-b0 Firmware · Zyxel
All versions, or not specified · source: NVD
EF
Ex5501-b0 Firmware · Zyxel
All versions, or not specified · source: NVD
EF
Ex5510-b0 Firmware · Zyxel
before 5.17\(abqx.7\)c0 · source: NVD
Affected product
AF
Ax7501-b0 Firmware
Zyxel
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-43391
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-43391
Vendor Advisory
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
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