Microsoft Office Elevation of Privilege Vulnerability

published 2026-03-10 8 mo ago modified 2026-06-19 4 mo ago also EUVD-2026-10699

cvss: 7.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 31%
public exploits: 0; none known

Integer overflow or wraparound in Microsoft Office allows an authorized attacker to elevate privileges locally.

Patch / fix

fixed in 1 links 1

Microsoft Microsoft Office for Android 16.0.19822.20000

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26134 advisory

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 8 mo ago (2026-03-05)

Exploit prediction

0.38% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.8	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	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Microsoft Microsoft Office for Android

Classification

Weakness

CWE-190 Integer Overflow or Wraparound
CWE-416 Use After Free

References

msrc.microsoft.com /update-guide/vulnerability/CVE-2026-26134
vendor-advisory, patch

Sources

CVE List CVE-2026-26134
NVD CVE-2026-26134

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary