CRITICAL

CVE-2026-70279

CVSS v3

9.3

CRITICAL

EPSS Score

—

exploit probability

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-70279 yet.

Full record on NVD

Description

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Published: 2026-10-13
Last Modified: 2026-10-13

Frequently asked questions

What is CVE-2026-70279?

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.

Is CVE-2026-70279 actively exploited?

Active exploitation of CVE-2026-70279 has not been confirmed.

What is the CVSS score for CVE-2026-70279?

CVE-2026-70279 has a CVSS v3 base score of 9.3 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N.

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