CVE-2026-109485 Microsoft 365 Agents SDK Information Disclosure Vulnerability
Microsoft 365 Agents SDK
A server-side request forgery vulnerability in the Microsoft 365 Agents SDK allows an authorized attacker to disclose information over a network. Microsoft has published an advisory for the affected software.
why this severityDisclosed vendor advisory without reported exploitation.
disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why
- CVSS
- not scored
- EPSS
- 0.01 · top 50% · 2026-11-13
- fix status
- Fix status unknown
- affected
- Microsoft 365 Agents SDK
- first report
- 10 Nov 2026
- last update
- 10 Nov 2026
- CVE ids
What to do
Check Microsoft MSRC advisory for patch availability and update the Agents SDK.
Timeline · 1
Sources · 1
Advisories and databases
- 2026-11-10CVE-2026-109485 Microsoft 365 Agents SDK Information Disclosure VulnerabilityMSRC · msrc.microsoft.com/update-guide/vulnerability/CVE-2026-109485
Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.
Classification
- lane
- Patch now
- AI role
- Attack on AI
- categories
- Infrastructure vulnerabilityData leak
- severity
- 2 · Disclosed vulnerability
- fix status
- Fix status unknown
- targets
- Microsoft, Framework / tooling
- mitre atlas
- no technique for these categories
- dates
- happened 10 Nov 2026 · first reported 10 Nov 2026
- origin
- News & research feeds
- record
- confidence 0.95 · created 2026-11-11 03:41Z · updated 2026-11-11 03:41Z
Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned
Copy a brief
This record as a short Markdown brief, for a ticket, a chat or a coding agent.
the brief as text
# CVE-2026-109485 Microsoft 365 Agents SDK Information Disclosure Vulnerability https://gcdradar.vercel.app/incidents/cve-2026-109485-microsoft-365-agents-sdk-information-disclos · AIR-2026-1893 · closed 2026-11-10 - Lane: Patch now - Severity: 2 (Disclosed vulnerability): Disclosed vendor advisory without reported exploitation. - Fix status: Fix status unknown - First reported: 2026-11-10 - AI role: Attack on AI - Products: Microsoft 365 Agents SDK - CVE ids: CVE-2026-109485 ## Summary A server-side request forgery vulnerability in the Microsoft 365 Agents SDK allows an authorized attacker to disclose information over a network. Microsoft has published an advisory for the affected software. ## What to do Check Microsoft MSRC advisory for patch availability and update the Agents SDK. ## Affected and fixed versions - Affected: Microsoft 365 Agents SDK ## Latest updates - 2026-11-10: CVE-2026-109485 Microsoft 365 Agents SDK Information Disclosure Vulnerability (https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-109485) ## Sources - 2026-11-10 MSRC: CVE-2026-109485 Microsoft 365 Agents SDK Information Disclosure Vulnerability https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-109485 Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.
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