CVE-2026-78439

HIGH

MEDIUM Priority: 0.07 BB Relevance: 68/100

Published: 2026-09-08 Modified: 2026-10-30 First seen: 2026-10-30 Status: active

Network Low Complexity No Auth Conf. Impact Integ. Impact

AV: Network

AC: Low

PR: None

UI: Required

S: Unchanged

C: High

I: High

A: High

Stack-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.

Vendor	Product	Version
Microsoft	Microsoft Office 365 for Mac	1.0.0 < 16.113.26091433
Microsoft	Microsoft Office LTSC for Mac 2021	16.0.1 < 16.113.26091433
Microsoft	Microsoft Office LTSC for Mac 2024	16.0.0 < 16.113.26091433
Microsoft	Microsoft Office for Android	16.0.1 < 16.0.20430.20000

vendor-advisory patch

68 / 100

✓ Network accessible
✓ No authentication
✓ Low complexity

8.8 / 10.0 v3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

0.84%

Raw Score 0.008370

Percentile 57.8%

Date 2026-10-31

2026-10-31

0.00837

2026-10-30

0.00837

mitre ref →