SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-0640

Buffer overflow in Aterm HC100RC Ver1.0.1 and earlier allows attacker with administrator rights to execute arbitrary code via netWizard.cgi date parameter, time parameter, and offset parameter.

HIGH 7.2EPSS 1.80%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.80%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Buffer overflow in Aterm HC100RC Ver1.0.1 and earlier allows attacker with administrator rights to execute arbitrary code via netWizard.cgi date parameter, time parameter, and offset parameter.

CVSS 3.0
7.2 HIGHCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS
1.80% probability · 78th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-119
Affected
nec/aterm hc100rc firmware
Source
vultures@jpcert.or.jp
EPSS trend
0%3%5%27 October 2026: 1.80%27 October 202627 October 2026

EPSS 1.8% since 27 October 2026; no change recorded yet. 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.