CRITICALVulnerability

CVE-2026-78509

Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.

Properties

severity
CRITICAL
score
9.8
cve_id
CVE-2026-78509
signal_observed_at
2026-09-17T21:32:12+00:00
vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
published_at
2026-09-08T18:20:46.070
last_modified
2026-09-17T20:18:31.397

Related Entities (15)

HAS_WEAKNESS (1)

[Weakness]Heap-based Buffer Overflow

DESCRIBED_BY (1)

[Source]NVD

AFFECTS_PRODUCT (13)

[Product]
[Product]
[Product]
[Product]
[Product]
[Product]
[Product]
[Product]
[Product]
[Product]
[Product]
[Product]
[Product]

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CVE-2026-78509 — Ninja Signal Threat Intelligence | Ninja Signal