7.4High

CVE-2026-42893Microsoft Outlook for iOS Tampering Vulnerability

Microsoft Microsoft Outlook for iOS Published: 2026-05-12 19:59 (6 months ago)

Description

Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to perform tampering over a network.

Weakness (CWE): CWE-77

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

Vendor	Product	Versions
Microsoft	Microsoft Outlook for iOS	1.0.0 – < 5.2617.1
microsoft	outlook	1.0.0 – < 5.2617.1

References and patches

Microsoft Outlook for iOS Tampering Vulnerability vendor-advisorypatchVendor Advisory

CPE matches (NVD) (1)

cpe:2.3:a:microsoft:outlook:*:*:*:*:*:iphone_os:*:* < 5.2617.1

CVSS score

7.4High

Source: microsoft · CVSS 3.1

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: Required
Scope: Changed
Confidentiality: None
Integrity: High
Availability: None

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

All scores (3)

cna	CVSS 3.1	7.4High
secure@microsoft.com	CVSS 3.1	7.4High
nvd	CVSS 3.1	7.5High

EPSS (chance of exploitation in 30 days)

0.40%

higher than 35% of all CVEs

CISA assessment (SSVC)

Exploitation: none
Automatable: no
Technical impact: partial

Timeline

ID reserved2026-04-30
Published2026-05-12 19:59
Reached IP-DB2026-10-24 23:48
Last updated2026-10-26 21:10

Assigned by (CNA): microsoft
NVD status: Analyzed

View at source: CVE.org · NVD

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