Vulnerability Details : CVE-2023-27989
A buffer overflow vulnerability in the CGI program of the Zyxel NR7101 firmware versions prior to V1.00(ABUV.8)C0 could allow a remote authenticated attacker to cause denial of service (DoS) conditions by sending a crafted HTTP request to a vulnerable device.
Vulnerability category: OverflowDenial of service
Products affected by CVE-2023-27989
- cpe:2.3:o:zyxel:lte7480-m804_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:nr7101_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:lte7490-m904_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:nebula_nr7101_firmware:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-27989
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 30 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-27989
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
Zyxel Corporation |
CWE ids for CVE-2023-27989
-
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-2023-27989
-
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-buffer-overflow-vulnerability-in-4g-lte-and-5g-nr-outdoor-routers
Access denied | Zyxel NetworksPatch;Third Party Advisory
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