CVE-2026-62911

HIGH 3 PoCs
MEDIUM Priority: 0.06 BB Relevance: 66/100
Published: 2026-08-11 Modified: 2026-10-28 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: Required
S: Unchanged
C: High
I: High
A: High

Description

Authentication bypass by capture-replay in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

Bug Bounty Relevance

66 / 100
✓ Network accessible
✓ Low complexity
✓ PoC available (3)

CVSS Score

8.0 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

EPSS — Exploitation Probability

0.69%
Raw Score 0.006940
Percentile 52.8%
Date 2026-10-28

Intelligence Sources

mitre ref →