CVE-2026-70279

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft…

Risk score: 82/100
CVSS: 9.3 v3.1
Exploit chance (30 days): 0.9%
Published: 13 Oct 2026

Open in the live forecast Today's forecast

What to know

What it is: 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.
Affected: See advisory
Fix: Apply the vendor's security update; see the linked advisory.
Exploitation: No known exploitation

Why it is Red

CVSS 9.3 critical
Remotely exploitable without logging in
On your watchlist: exchange server

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70279

Original 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.

Last activity 13 Oct 2026. Patch Forecast updates every hour.