VulnerabilityAwaiting Analysis
CVE-2026-83670
Out-of-bounds read in Function Discovery Service (fdwsd.dll) allows an unauthorized attacker to disclose information over a network.
HIGH 7.5EPSS 1.09%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.09%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Out-of-bounds read in Function Discovery Service (fdwsd.dll) allows an unauthorized attacker to disclose information over a network.
- 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
- 1.09% probability · 65th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Source
- secure@microsoft.com
EPSS moved from 1.0% on 14 October 2026 to 1.1% on 27 October 2026.
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.