Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
AVAILABLE
Momentum
STABLE
If you run products in this scope, you should treat this CVE as relevant to your environment.
1 version affected across 5 products
🚨 HIGH SEVERITY: CVE-2026-55017 (CVSS 7.8) Heap-based buffer overflow in Microsoft Office enables local code execution. Requires user interaction. Patch immediately. #CVE #Vulnerability #PatchNow #ThreatIntel #DFIR https://t.co/J7qrRFJ9h5
Post summary
The post highlights a high-severity heap-based buffer overflow in Microsoft Office that allows local code execution and urges users to patch immediately.
🪟 Office RCE with a “local” attack vector: attackers still need you to open the trap, not leave a network door unlocked. Patch anyway—curiosity remains Windows’ most exploitable feature. https://windowsforum.com/threads/cve-2026-55017-patch-microsoft-office-rce-in-july-2026.438662/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #MicrosoftOffice #RemoteCodeExecution #OfficeSecurityUpdates https://t.co/jn8CAEmeoF
Post summary
A patch is advised for CVE-2026-55017, which causes a local Office RCE; no evidence of active exploitation or PoC is provided.
10 of 10 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | microsoft | 365_apps | - | - | x64 |
| App | microsoft | 365_apps | - | - | x86 |
| App | microsoft | office_2016 | - | - | x64 |
| App | microsoft | office_2016 | - | - | x86 |
| App | microsoft | office_2019 | - | - | x64 |
| App | microsoft | office_2019 | - | - | x86 |
| App | microsoft | office_2021 | - | - | x64 |
| App | microsoft | office_2021 | - | - | x86 |
| App | microsoft | office_2024 | - | - | x64 |
| App | microsoft | office_2024 | - | - | x86 |