CVE-2026-70279 PUBLISHED

Microsoft Exchange Server Spoofing Vulnerability

Assigner: microsoft
Reserved: 03.08.2026 Published: 13.10.2026 Updated: 14.10.2026

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.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C
CVSS Score: 9.3

Product Status

Vendor Microsoft
Product Microsoft Exchange Server 2016 Cumulative Update 23
Versions
  • affected from 15.01.0.0 to 15.01.2507.077 (excl.)
Vendor Microsoft
Product Microsoft Exchange Server 2019 Cumulative Update 14
Versions
  • affected from 15.02.0.0 to 15.02.1544.050 (excl.)
Vendor Microsoft
Product Microsoft Exchange Server 2019 Cumulative Update 15
Versions
  • affected from 15.02.0.0 to 15.02.1748.055 (excl.)
Vendor Microsoft
Product Microsoft Exchange Server Subscription Edition RTM
Versions
  • affected from 15.02.0.0 to 15.02.2562.056 (excl.)

References

Problem Types