CVE-2026-80091
Microsoft Office Information Disclosure Vulnerability
Use of uninitialized resource in Microsoft Office allows an unauthorized attacker to disclose information over a network.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Microsoft Office Information Disclosure Vulnerability
Use of uninitialized resource in Microsoft Office allows an unauthorized attacker to disclose information over a network.
- Record
CVE-2026-80091- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C - Weakness
- CWE-908
- Updated
- 2026-11-02
EUVDEUVD-2026-73842
Use of uninitialized resource in Microsoft Office allows an unauthorized attacker to disclose information over a network.
- Record
EUVD-2026-73842- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-f7m9-p994-pr6w
Use of uninitialized resource in Microsoft Office allows an unauthorized attacker to disclose...
Use of uninitialized resource in Microsoft Office allows an unauthorized attacker to disclose information over a network.
- Record
GHSA-f7m9-p994-pr6w- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - Weakness
- CWE-908
- Updated
- 2026-11-02
NVD
Use of uninitialized resource in Microsoft Office allows an unauthorized attacker to disclose information over a network.
- Record
CVE-2026-80091- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - Weakness
- CWE-908
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-80091 is a medium vulnerability (CVSS 6.5) in Microsoft 365 Apps, published September 8, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.92%, the 60th percentile. No source names a fixed version.