Is CVE-2021-31955 exploitable?

Yes — CVE-2021-31955 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it is confirmed exploited in the wild.

Is CVE-2021-31955 a false positive?

No practitioners have marked CVE-2021-31955 a false positive so far (3 verdicts).

How do I remediate CVE-2021-31955?

Practitioners have shared remediation steps for CVE-2021-31955 — see the remediation notes on this page.

CVE-2021-31955

is CVE-2021-31955real, exploitable, or a false positive? Here's the community ground truth.

☆ Watch

Medium · CVSS 5.5EPSS 80.3%CISA KEVCWE-497

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

Windows Kernel Information Disclosure Vulnerability

NVD only has a brief summary for this one — the community fills in the real-world detail below.

References

NVD MITRE CVE.org CISA KEV

Published Jun 8, 2021

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Community ground truth

Community verdict

3 verdicts

Not a real issue

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Community real-world severity: High (High 3) — CVSS base score 5.5

Practitioners rate this higher than its CVSS — treat with extra caution.

Field notes & remediation

Verdicts are the quick signal — notes are the evidence and fixes behind them.

0
Field note · Priya NairCurated
Microsoft Windows Kernel Information Disclosure Vulnerability — Microsoft Windows Kernel contains an unspecified vulnerability that allows for information disclosure. Successful exploitation allows attackers to read the contents of kernel memory from a user-mode process. Listed in the CISA KEV catalog (added 2021-11-03) — confirmed exploited in the wild, not theoretical. FIRST EPSS puts the chance of exploitation in the next 30 days at ~80%. Treat it as real and prioritize remediation over triage.
0
Remediation · Diego RamírezCurated
Required action for Microsoft Windows: Apply updates per vendor instructions. CISA set a federal remediation due date of 2021-11-17. After patching, verify the vulnerable path is no longer reachable before closing the finding.