SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2017-0066

Microsoft Edge allows remote attackers to bypass the Same Origin Policy for HTML elements in other browser windows, aka "Microsoft Edge Security Feature Bypass Vulnerability." This vulnerability is different from those described in CVE-2017-0135 and…

MEDIUM 4.2EPSS 29.9%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 29.9%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.

Description

Microsoft Edge allows remote attackers to bypass the Same Origin Policy for HTML elements in other browser windows, aka "Microsoft Edge Security Feature Bypass Vulnerability." This vulnerability is different from those described in CVE-2017-0135 and CVE-2017-0140.

CVSS 3.0
4.2 MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
EPSS
29.95% probability · 98th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Affected
microsoft/edge
Source
secure@microsoft.com
EPSS trend
0%15%30%21 September 2026: 28.87%22 September 2026: 29.95%27 October 2026: 29.95%21 September 202627 October 2026

EPSS moved from 28.9% on 21 September 2026 to 29.9% 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.