CVE-2026-34348

MEDIUM 1 PoC
MEDIUM Priority: 0.06 BB Relevance: 73/100
Published: 2026-07-14 Modified: 2026-10-28 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: Unchanged
C: High
I: None
A: None

Description

Protection mechanism failure in Windows Event Logging Service allows an authorized attacker to disclose information over a network.

Affected Software (20)

VendorProductVersion
Microsoft Windows 10 Version 1809 10.0.17763.0 < 10.0.17763.9020
microsoft windows_10_1809 < 10.0.17763.9020
microsoft windows_10_1809 < 10.0.17763.9020
microsoft windows_10_21h2 < 10.0.19044.7548
microsoft windows_10_21h2 < 10.0.19044.7548
microsoft windows_10_21h2 < 10.0.19044.7548
microsoft windows_10_22h2 < 10.0.19045.7548
microsoft windows_10_22h2 < 10.0.19045.7548
microsoft windows_10_22h2 < 10.0.19045.7548
microsoft windows_11_23h2 < 10.0.22631.7376
microsoft windows_11_23h2 < 10.0.22631.7376
microsoft windows_11_24h2 < 10.0.26100.8875
microsoft windows_11_24h2 < 10.0.26100.8875
microsoft windows_11_25h2 < 10.0.26200.8875
microsoft windows_11_25h2 < 10.0.26200.8875
microsoft windows_11_26h1 < 10.0.28000.2269
microsoft windows_11_26h1 < 10.0.28000.2269
microsoft windows_server_2019 < 10.0.17763.9020
microsoft windows_server_2022 < 10.0.20348.5386
microsoft windows_server_2025 < 10.0.26100.33158

References & Advisories (1)

Proof of Concept (1)

Bug Bounty Relevance

73 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction
✓ PoC available (1)

CVSS Score

6.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

EPSS — Exploitation Probability

1.00%
Raw Score 0.009950
Percentile 62.6%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00995
2026-10-28
0.00995

Intelligence Sources

mitre ref →