Security readout for executives and security teams
Plain-English summary
CVE-2026-26134 is a high-severity Microsoft Office for Android local privilege escalation issue. A user who already has local access could gain higher privileges on an affected Android device. The provided data identifies Microsoft Office for Android version 16.0.1 as affected and points to Microsoft’s advisory for the official update.
Executive priority
Treat as a near-term mobile endpoint patching priority. It is not described as remotely exploitable or actively exploited, but successful abuse could give an attacker broad impact on an affected device.
Technical view
The vulnerability is described as integer overflow or wraparound in Microsoft Office, enabling local elevation of privilege by an authorized attacker. CVSS 3.1 is 7.8 with local attack vector, low complexity, low privileges required, no user interaction, and high confidentiality, integrity, and availability impact. CWE mappings include CWE-190 and CWE-416.
Likely exposure
Exposure is likely limited to Android devices running Microsoft Office for Android version 16.0.1. Organizations with managed mobile fleets, BYOD Android users, or mobile Office access should verify installed versions and update status.
Exploitation context
The source bundle does not indicate active exploitation. CISA KEV status is false, and the CVSS exploit code maturity is listed as unproven. Exploitation requires local access and an already authorized attacker, reducing remote exposure but still relevant for compromised or shared devices.
Researcher notes
Evidence is limited to the CVE record and Microsoft advisory metadata. The affected product list names only Microsoft Office for Android 16.0.1. Do not assume other Office platforms are affected unless Microsoft updates the advisory.
Mitigation direction
- Review Microsoft’s MSRC advisory for the official fixed version and update guidance.
- Update Microsoft Office for Android through approved enterprise or app-store channels.
- Prioritize managed Android devices with access to corporate documents, email, or cloud storage.
- Remove or restrict outdated Office installations where immediate updating is not possible.
Validation and detection
- Inventory Android devices for Microsoft Office for Android version 16.0.1.
- Confirm devices have received the Microsoft-provided update referenced by MSRC.
- Check mobile device management compliance reports for outdated Office installations.
- Monitor Microsoft’s advisory for revisions or additional affected-version details.
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-190: 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 lookupCWE-416: 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 lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-26134 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
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/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.
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:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- Microsoft Office Elevation of Privilege VulnerabilityCVE reference · 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.
Integer Overflow or Wraparound
Integer Overflow or Wraparound represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.