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PatchSiren cyber security CVE debrief

CVE-2026-45485 Microsoft CVE debrief

CVE-2026-45485 is a low-severity vulnerability (CVSS score of 3.3) that was published on 2026-06-09T17:17:23.010Z and modified on 2026-06-09T19:32:51.440Z. The vulnerability is an out-of-bounds read issue in Microsoft Office, which could allow an unauthorized attacker to disclose information locally. The vendor is currently listed as Unknown Vendor, but there is evidence suggesting that the vendor may be Microsoft [reference_domain_candidate].

Vendor
Microsoft
Product
Microsoft 365 Apps for Enterprise
CVSS
LOW 3.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-06-19
Advisory published
2026-06-09
Advisory updated
2026-06-19

Who should care

Users of Microsoft Office should be aware of this vulnerability and take steps to ensure their systems are up to date.

Technical summary

The vulnerability is an out-of-bounds read issue in Microsoft Office, which could allow an unauthorized attacker to disclose information locally. The CVSS vector for this vulnerability is CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N. The weakness associated with this vulnerability is CWE-125.

Defensive priority

Low

Recommended defensive actions

  • Apply patches or updates from the vendor as they become available [ref-4].

Evidence notes

The CVE record [cve-org] and NVD detail [nvd] provide additional information about this vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-45485 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-45485

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-45485 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-45485

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.