Security readout for executives and security teams
Plain-English summary
This low-severity Microsoft Office vulnerability could expose limited information when an attacker causes a user to interact with affected software. The supplied evidence indicates local access and user interaction are required. It does not indicate data modification, service disruption, or remote compromise.
Executive priority
Schedule remediation through routine patching rather than emergency response. Accelerate deployment on systems processing sensitive information or exposed to untrusted users and documents. Escalation is warranted if Microsoft later reports exploitation or materially changes severity or applicability.
Technical view
CVE-2026-45485 is a CWE-125 out-of-bounds read affecting listed Microsoft Office, Microsoft 365, Office for Mac, and SharePoint products. CVSS 3.1 is 3.3: local attack vector, low complexity, no privileges, user interaction required, and low confidentiality impact only.
Likely exposure
Exposure exists where the listed Microsoft Office, Microsoft 365, Office for Mac, or SharePoint versions remain applicable and unpatched. The bundle provides product-level versions but no fixed build numbers, so administrators should determine applicability through Microsoft’s advisory and their software inventory.
Exploitation context
The CVSS vector records exploit maturity as unproven, and this CVE is not identified as CISA KEV in the supplied bundle. No cited evidence confirms active exploitation. Successful exploitation requires local conditions and user interaction, limiting broad remote attack potential.
Researcher notes
The documented weakness is an out-of-bounds read with confidentiality impact only. The sources do not identify the vulnerable component, trigger format, disclosed memory contents, affected build ranges, fixed builds, or exploitation details. Validate those points against Microsoft’s advisory without assuming all installations sharing the listed major versions are vulnerable.
Mitigation direction
- Review the Microsoft advisory for product-specific security updates and fixed build information.
- Deploy the applicable Microsoft security updates through the organization’s normal patch process.
- Prioritize systems handling sensitive documents or data despite the vulnerability’s low severity.
- Use existing controls to restrict untrusted local access and suspicious document interactions.
Validation and detection
- Inventory installations of every Microsoft product listed in the affected-product record.
- Compare installed builds with applicability and fixed-version details in Microsoft’s advisory.
- Confirm applicable updates installed successfully across Windows, macOS, and SharePoint estates.
- Monitor Microsoft guidance for revisions because the supplied record was recently updated.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-125: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-45485 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Low
- CVSS
- 3.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C1.81.4microsoftVulnerability scoring details
Base CVSS 3.1 score
3.3LowVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- Microsoft Office Information Disclosure VulnerabilityCVE reference, microsoft · vendor-advisory, patch
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.