SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2017-1000471

EmbedThis GoAhead Webserver version 4.0.0 is vulnerable to a NULL pointer dereference in the CGI handler resulting in memory corruption or denial of service.

CRITICAL 9.8EPSS 8.61%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (8.61%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

EmbedThis GoAhead Webserver version 4.0.0 is vulnerable to a NULL pointer dereference in the CGI handler resulting in memory corruption or denial of service.

CVSS 3.0
9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
8.61% probability · 95th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-476
Affected
embedthis/goahead
Source
cve@mitre.org
EPSS trend
0%5%10%21 September 2026: 1.47%22 September 2026: 8.61%27 October 2026: 8.61%21 September 202627 October 2026

EPSS moved from 1.5% on 21 September 2026 to 8.6% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

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