CVE•Published 2026-01-13•Modified 2026-05-26•1 article on news•6 live references•NVD data
CVE-2026-20817Microsoft · Windows_10_21h2
Vulnerability data via NVD (ingested)
CVSS v3.1
7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
9
Exploit Prediction Scoring System · top 91% of all CVEs
Description
Improper handling of insufficient permissions or privileges in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
Timeline
Published 2026-01-13
Modified 2026-05-26
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-20817Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · OS
os:"Windows 10 21h2"Hosts Shodan identified as running Windows 10 21h2.
More intel sources (5)
Shodan report
vuln:CVE-2026-20817Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-20817Censys host search filtered to this CVE id.
grep.app
CVE-2026-20817Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-20817GitHub code search for direct mentions.
Google dork
"CVE-2026-20817" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub (5)
CVE-2026-208175 repos
nomi-sec/PoC-in-GitHubunknown
📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.
GhostTroops/TOPShell
TOP All bugbounty pentesting CVE-2023- POC Exp RCE example payload Things
oxfemale/CVE-2026-20817C++
Windows Error Reporting ALPC Elevation of Privilege (CVE-2026-20817) - Proof-of-Concept exploit demonstrating local privilege escalation via WER service.
DarkFunct/TK-CVE-RepoPython
TK-CVE-Repo
itm4n/CVEsC++
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