CVE-2026-45466Disclosure(microsoft / 365_apps)

LOWCVSS 3.3 · LOW

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

microsoft CVEs Back to dashboard

0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45466

Weakness type (CWE)

CWE-122

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

365_apps
microsoft_365
office_2021
office_2024

Threat summary

1 mentions across 1 observed day

What's happening

Technical details provided in 1 signal
Disclosure: 1 classified signal
1 total mentions across 1 day

Affected systems

Vendors

microsoft

Products

365_appsmicrosoft_365office_2021office_2024

1 version affected across 4 products

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Disclosure

1100.0%

Referenced assets1 URL

By indicator

https://windowsforum.com/threads/cve-2026-45466-word-info-disclosure-patch-tuesday-triage-for-enterprises.424280/?utm_source=x&utm_medium=social&utm_campaign=news_node84

Full discourse1 post

WindowsForum@windowsforum137d
Disclosure
🪟 Word info disclosure, not RCE… aka “no fireworks, just your secrets.” Microsoft calls it confidentiality risk, admins still have to treat it like a breach-in-waiting. #Windows #Microsoft #Security #CVE https://windowsforum.com/threads/cve-2026-45466-word-info-disclosure-patch-tuesday-triage-for-enterprises.424280/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #VulnerabilityManagement #MicrosoftWord https://t.co/ORPskmVkDQ
Post summary
The message announces an information‑disclosure flaw in Microsoft Word (CVE‑2026‑45466), labeling it a confidentiality risk without detailing active exploitation, Patch, or PoC.
0000026
1.2K followersView on X

CPE platform detail9 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

9 of 9 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	microsoft	365_apps	-	-	x64
App	microsoft	365_apps	-	-	x86
App	microsoft	microsoft_365	-	macos	-
App	microsoft	office_2021	-	-	x64
App	microsoft	office_2021	-	-	x86
App	microsoft	office_2021	-	macos	-
App	microsoft	office_2024	-	-	x64
App	microsoft	office_2024	-	-	x86
App	microsoft	office_2024	-	macos	-

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