SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-34563

This allows the cookie's value to be read or set by client-side JavaScript.

LOW 3.3EPSS 0.24%

Does this matter?

Lower severity and a low EPSS score (0.24%). Track it; it rarely justifies an emergency change on its own.

Description

In PEPPERL+FUCHS WirelessHART-Gateway 3.0.8 and 3.0.9 the HttpOnly attribute is not set on a cookie. This allows the cookie's value to be read or set by client-side JavaScript.

CVSS 3.1
3.3 LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS
0.24% probability · 15th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-1004
Affected
pepperl-fuchs/wha-gw-f2d2-0-as-z2-eth firmware · pepperl-fuchs/wha-gw-f2d2-0-as-z2-eth.eip firmware
Source
info@cert.vde.com
EPSS trend
0%3%5%26 October 2026: 0.24%26 October 202626 October 2026

EPSS 0.2% since 26 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.