SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2023-28770

The sensitive information exposure vulnerability in the CGI “Export_Log” and the binary “zcmd” in Zyxel DX5401-B0 firmware versions prior to V5.17(ABYO.1)C0 could allow a remote unauthenticated attacker to read the system files and to retrieve the…

HIGH 7.5EPSS 57.8%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 57.8%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

Description

The sensitive information exposure vulnerability in the CGI “Export_Log” and the binary “zcmd” in Zyxel DX5401-B0 firmware versions prior to V5.17(ABYO.1)C0 could allow a remote unauthenticated attacker to read the system files and to retrieve the password of the supervisor from the encrypted file.

CVSS 3.1
7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
57.78% probability · 99th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-200, CWE-203
Affected
zyxel/dx5401-b0 firmware
Source
security@zyxel.com.tw
EPSS trend
0%30%60%3 November 2026: 57.78%3 November 20263 November 2026

EPSS 57.8% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.