CVE-2026-45460: Microsoft Office Information Disclosure Vulnerability
Noroxi assessment
Priority: Monitor (action score 18/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.37% (FIRST EPSS).
- Someone with local access to the system can trigger it. No account or password is required. A user must open a link or visit a page. Special conditions such as timing or configuration are required.
- Fixed version: Microsoft 365 Apps for Enterprise for 32-bit Systems https://aka.ms/OfficeSecurityReleases; Microsoft 365 Apps for Enterprise for 64-bit Systems https://aka.ms/OfficeSecurityReleases; Microsoft Office 2019 for 32-bit editions https://aka.ms/OfficeSecurityReleases.
Low priority for now. Upgrade to Microsoft 365 Apps for Enterprise for 32-bit Systems https://aka.ms/OfficeSecurityReleases; Microsoft 365 Apps for Enterprise for 64-bit Systems https://aka.ms/OfficeSecurityReleases; Microsoft Office 2019 for 32-bit editions https://aka.ms/OfficeSecurityReleases or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
Buffer over-read in Microsoft Office allows an unauthorized attacker to disclose information locally.
- Published
- Jun 9, 2026
- Updated
- Sep 24, 2026
- EPSS
- 0.3% · 31th percentile
- CWE
- CWE-126
Report tools
Action score
18
Low priority for now.
- CVSS
- 18 / 40 · 4.7 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.3%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · microsoft
- 4.7
- NVD has not scored this yet; the score shown is the CNA’s.
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
Is your version affected? Check itNoroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| microsoft | 365 apps | cpe:2.3:a:microsoft:365_apps |
| microsoft | 365 copilot | cpe:2.3:a:microsoft:365_copilot |
| microsoft | microsoft 365 | cpe:2.3:a:microsoft:microsoft_365 |
| microsoft | office 2019 | cpe:2.3:a:microsoft:office_2019 |
| microsoft | office 2021 | cpe:2.3:a:microsoft:office_2021 |
| microsoft | office 2024 | cpe:2.3:a:microsoft:office_2024 |
Versions reported by the vendor
Affected version ranges reported by the assigning authority (microsoft). Independent of NVD's CPE analysis and usually ahead of it.
Microsoft Microsoft 365 Apps for Enterprise
- 16.0.1 and later · before https://aka.ms/OfficeSecurityReleasesaffected
Microsoft Microsoft Office 2019
- 19.0.0 and later · before https://aka.ms/OfficeSecurityReleasesaffected
Microsoft Microsoft Office 365 for Mac
- 1.0.0 and later · before 16.110.26061317affected
Microsoft Microsoft Office for Android
- 16.0.1 and later · before 16.0.20131.20024affected
Microsoft Microsoft Office LTSC 2021
- 16.0.1 and later · before https://aka.ms/OfficeSecurityReleasesaffected
Microsoft Microsoft Office LTSC 2024
- 16.0.0 and later · before https://aka.ms/OfficeSecurityReleasesaffected
Microsoft Microsoft Office LTSC for Mac 2021
- 16.0.1 and later · before 16.110.26061317affected
Microsoft Microsoft Office LTSC for Mac 2024
- 16.0.0 and later · before 16.110.26061317affected
Affected versions · NVD (6)
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- microsoft 365 appsall versions
- microsoft 365 copilotall versions
- microsoft microsoft 365all versions
- microsoft office 2019all versions
- microsoft office 2021all versions
- microsoft office 2024all versions
Same product
microsoft: all recordsOther highest-scoring records for the same primary product.
- CVE-2023-23397Microsoft Outlook Elevation of Privilege VulnerabilityKEV98Now
- CVE-2024-21413Microsoft Outlook Remote Code Execution VulnerabilityKEV97Now
- CVE-2026-21509Microsoft Office Security Feature Bypass VulnerabilityKEV82Now
Published before and after this one in the same product
- ← EarlierCVE-2026-45458Jun 9, 2026 · Microsoft Outlook and Word Remote Code Execution Vulnerability33Monitor
- ← EarlierCVE-2026-45459Jun 9, 2026 · Microsoft Excel Security Feature Bypass Vulnerability13Monitor
- Later →CVE-2026-45461Jun 9, 2026 · Microsoft Office Remote Code Execution Vulnerability33Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Microsoft 365 Apps for Enterprise for 32-bit Systems | https://aka.ms/OfficeSecurityReleases · Click to Run | Microsoft (MSRC) |
| Microsoft 365 Apps for Enterprise for 64-bit Systems | https://aka.ms/OfficeSecurityReleases · Click to Run | Microsoft (MSRC) |
| Microsoft Office 2019 for 32-bit editions | https://aka.ms/OfficeSecurityReleases · Click to Run | Microsoft (MSRC) |
| Microsoft Office 2019 for 64-bit editions | https://aka.ms/OfficeSecurityReleases · Click to Run | Microsoft (MSRC) |
| Microsoft Office 365 for Mac | 16.110.26061317 · Release Notes | Microsoft (MSRC) |
| Microsoft Office for Android | 16.0.20131.20024 · Release Notes | Microsoft (MSRC) |
| Microsoft Office LTSC 2021 for 32-bit editions | https://aka.ms/OfficeSecurityReleases · Click to Run | Microsoft (MSRC) |
| Microsoft Office LTSC 2021 for 64-bit editions | https://aka.ms/OfficeSecurityReleases · Click to Run | Microsoft (MSRC) |
| Microsoft Office LTSC 2024 for 32-bit editions | https://aka.ms/OfficeSecurityReleases · Click to Run | Microsoft (MSRC) |
| Microsoft Office LTSC 2024 for 64-bit editions | https://aka.ms/OfficeSecurityReleases · Click to Run | Microsoft (MSRC) |
| Microsoft Office LTSC for Mac 2021 | 16.110.26061317 · Release Notes | Microsoft (MSRC) |
| Microsoft Office LTSC for Mac 2024 | 16.110.26061317 · Release Notes | Microsoft (MSRC) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2026-5503635 days apartMicrosoft Excel Remote Code Execution Vulnerability31Monitor
- CVE-2026-6490563 days apartMicrosoft Office Word Remote Code Execution Vulnerability31Monitor
- CVE-2025-62560182 days apartMicrosoft Excel Remote Code Execution Vulnerability31Monitor
- CVE-2025-32704392 days apartMicrosoft Excel Remote Code Execution Vulnerability31Monitor
- CVE-2026-6962691 days apartMicrosoft Office Information Disclosure Vulnerability26Monitor
- CVE-2026-7297491 days apartMicrosoft Office Excel Information Disclosure Vulnerability26Monitor
Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · public bounty program.
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- No account or password is required.
- A user must open a link or visit a page.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Local
- Attack complexity
- High
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-126 · Buffer Over-readCVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log (1)
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.