CVE•Published 2026-05-07•Modified 2026-06-01•0 articles on news•5 live references•NVD data
CVE-2026-26129Microsoft · 365_copilot_chat
Vulnerability data via NVD (ingested)
CVSS v3.1
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS percentile
—
Weaknesses (CWE)
Description
Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to disclose information over a network.
Timeline
Published 2026-05-07
Modified 2026-06-01
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-2026-26129Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Microsoft 365 Copilot Chat"All exposed Microsoft 365 Copilot Chat instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"365 Copilot Chat"HTTP body or banner mentions "365 Copilot Chat" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-26129Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-26129Censys host search filtered to this CVE id.
grep.app
CVE-2026-26129Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-26129GitHub code search for direct mentions.
Google dork
"CVE-2026-26129" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-26129 on GitHub.
We haven't classified any articles referencing CVE-2026-26129 yet. The external references above still apply.