CVE-2023-21687 | BDVDB-2026-195337 Detail

MicrosoftWindows 11 version 21H2

Description#

HTTP.sys Information Disclosure Vulnerability

Per CVSS v3.1: confidentiality impact high, integrity impact none, availability impact none. Attack vector: local.

No public exploit known

5.5 Medium

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 40.6.

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Memory Corruption

No specific action is recorded in the source data. Check the references for vendor guidance.

Not available

5.5 Medium

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

Not available

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).