CVE-2026-70571CWE-121

CVE-2026-70571

High · published October 13, 2026

CVSS v3.1
8.1
EPSS
1%
Percentile
60.1
In the wild
Unconfirmed
What it is

Stack-based buffer overflow in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00927 · 60.1th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2026-10-13T23:19Z
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70571 · [email protected]
EPSS history
Timeline
  • 15 OCT 03:33Z
    EPSS moved — → 1%
    epss
  • 13 OCT 19:01Z
    Microsoft Exchange Server Remote Code Execution Vulnerability
    cvelistv5
  • 13 OCT 19:01Z
    Microsoft Exchange Server Remote Code Execution Vulnerability
    cvelistv5