CVE-2026-118727
Microsoft Office Excel Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office Excel 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 Excel Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
- Record
CVE-2026-118727- 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-125
- Updated
- 2026-11-10
EUVDEUVD-2026-122597
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
- Record
EUVD-2026-122597- 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
- 2026-11-10
GitHub AdvisoriesGHSA-gg64-pf3f-f8jx
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose...
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
- Record
GHSA-gg64-pf3f-f8jx- 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-125
- Updated
- 2026-11-10
NVD
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
- Record
CVE-2026-118727- 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-125
- Updated
- 2026-11-10
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| published | EUVD | |
| published | EUVD, NVD | |
| aliases, references | GitHub Advisories | |
| cwes, references, severity, title | CVE List | |
| first indexed | EUVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-118727 is a medium vulnerability (CVSS 6.5) in Microsoft 365 Apps For Enterprise, published November 10, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.07%, the 65th percentile. No source names a fixed version.