AI description
CVE-2026-42980 is an integer underflow vulnerability found within the Windows NT OS Kernel. This flaw, also described as a wrap or wraparound condition, specifically affects the kernel's memory management code, particularly within the Windows Management Instrumentation (WMI) subsystem. An authorized attacker can exploit this vulnerability locally to elevate their privileges. By triggering this integer underflow, an attacker can corrupt kernel memory structures, bypassing existing privilege boundaries and potentially gaining full administrative control over an affected system. The vulnerability is categorized under CWE-191 (Integer Underflow) and also associated with CWE-122 (Heap-based Buffer Overflow).
- Description
- Integer underflow (wrap or wraparound) in Windows NT OS Kernel allows an authorized attacker to elevate privileges locally.
- Source
- secure@microsoft.com
- NVD status
- Analyzed
- Products
- windows_10_1607, windows_10_1809, windows_10_21h2, windows_10_22h2, windows_11_23h2, windows_11_24h2, windows_11_25h2, windows_11_26h1, windows_server_2012, windows_server_2016, windows_server_2019, windows_server_2022, windows_server_2025
CVSS 3.1
- Type
- Secondary
- Base score
- 7.8
- Impact score
- 5.9
- Exploitability score
- 1.8
- Vector string
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Severity
- HIGH
- secure@microsoft.com
- CWE-122
- Hype score
- Not currently trending
⚡️ August "In the Trend of VM" (#30): 4 trending vulns - ViPNet Client RCE (BDU:2026-09885), Windows Kernel EoP (CVE-2026-42980), and 2 actively exploited SharePoint flaws (CVE-2026-56164, CVE-2026-58644). #TrendVulns #ViPNet #Windows #SharePoint ➡️ https://t.co/NAraJjJJU
@leonov_av
17 Aug 2026
66 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
CVE-2026-42980: A PoC/exploit has been discovered for vulnerability CVE-2026-42980 PT ID: PT-2026-47906 Vendor: Microsoft Product: Windows 10 Version 1607 Description: Integer underflow (wrap or wraparound) in Windows NT OS Kernel allows an authorized attacker to elevate…
@lyrie_ai
24 Jul 2026
58 Impressions
0 Retweets
0 Likes
0 Bookmarks
1 Reply
0 Quotes
CVE-2026-42980, a Windows kernel WMI integer-underflow vulnerability that can be exploited for local privilege escalation to NT AUTHORITY\SYSTEM on vulnerable lab builds. https://t.co/VfwV0Bq3Xr
@Dinosn
19 Jul 2026
6335 Impressions
28 Retweets
123 Likes
75 Bookmarks
0 Replies
0 Quotes
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