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CVE tracker

New vulnerabilities – clearly explained

Every newly published security vulnerability (CVE), continuously from the NVD, with the actively exploited ones from CISA, the probability of exploitation (EPSS) and public exploits – each one researched individually: what is affected, what helps, what to do.

New CVEs in the last 30 days by severity

  • Critical
  • High
  • Medium
  • Low
  • Not rated
01,0002,0003,000Tue, 6 Oct 2026: 1,014 CVE (Critical 105, High 371, Medium 345, Low 38, Not rated 155)6 OctWed, 7 Oct 2026: 340 CVE (Critical 53, High 131, Medium 145, Low 9, Not rated 2)Thu, 8 Oct 2026: 496 CVE (Critical 62, High 194, Medium 219, Low 21)Fri, 9 Oct 2026: 315 CVE (Critical 42, High 152, Medium 105, Low 11, Not rated 5)Sat, 10 Oct 2026: 412 CVE (Critical 78, High 143, Medium 178, Low 13)Sun, 11 Oct 2026: 229 CVE (Critical 16, High 73, Medium 101, Low 39)11 OctMon, 12 Oct 2026: 674 CVE (Critical 48, High 264, Medium 282, Low 80)Tue, 13 Oct 2026: 2,303 CVE (Critical 170, High 1,361, Medium 729, Low 43)Wed, 14 Oct 2026: 824 CVE (Critical 92, High 374, Medium 285, Low 30, Not rated 43)Thu, 15 Oct 2026: 546 CVE (Critical 51, High 232, Medium 244, Low 19)Fri, 16 Oct 2026: 465 CVE (Critical 53, High 179, Medium 219, Low 14)16 OctSat, 17 Oct 2026: 100 CVE (Critical 4, High 42, Medium 50, Low 4)Sun, 18 Oct 2026: 549 CVE (Critical 10, High 55, Medium 65, Low 19, Not rated 400)Mon, 19 Oct 2026: 437 CVE (Critical 32, High 133, Medium 206, Low 66)Tue, 20 Oct 2026: 1,923 CVE (Critical 169, High 815, Medium 812, Low 127)Wed, 21 Oct 2026: 542 CVE (Critical 52, High 218, Medium 225, Low 47)21 OctThu, 22 Oct 2026: 492 CVE (Critical 69, High 162, Medium 207, Low 54)Fri, 23 Oct 2026: 492 CVE (Critical 40, High 170, Medium 91, Low 27, Not rated 164)Sat, 24 Oct 2026: 73 CVE (Critical 12, High 20, Medium 35, Low 6)Sun, 25 Oct 2026: 131 CVE (Critical 4, High 35, Medium 66, Low 26)Mon, 26 Oct 2026: 738 CVE (Critical 29, High 218, Medium 335, Low 65, Not rated 91)26 OctTue, 27 Oct 2026: 648 CVE (Critical 69, High 188, Medium 177, Low 33, Not rated 181)Wed, 28 Oct 2026: 626 CVE (Critical 35, High 224, Medium 214, Low 31, Not rated 122)Thu, 29 Oct 2026: 537 CVE (Critical 82, High 204, Medium 223, Low 22, Not rated 6)Fri, 30 Oct 2026: 668 CVE (Critical 45, High 220, Medium 262, Low 30, Not rated 111)Sat, 31 Oct 2026: 112 CVE (Critical 11, High 44, Medium 51, Low 1, Not rated 5)31 OctSun, 1 Nov 2026: 98 CVE (Critical 8, High 24, Medium 27, Low 15, Not rated 24)Mon, 2 Nov 2026: 476 CVE (Critical 26, High 188, Medium 169, Low 20, Not rated 73)Tue, 3 Nov 2026: 732 CVE (Critical 55, High 227, Medium 235, Low 36, Not rated 179)Wed, 4 Nov 2026: 121 CVE (Critical 9, High 41, Medium 17, Low 2, Not rated 52)4 Nov

Per day (UTC); hover over a bar for the figures.

Show as table
DayCriticalHighMediumLowNot ratedTotal
Wed, 4 Nov 202694117252121
Tue, 3 Nov 20265522723536179732
Mon, 2 Nov 2026261881692073476
Sun, 1 Nov 202682427152498
Sat, 31 Oct 202611445115112
Fri, 30 Oct 20264522026230111668
Thu, 29 Oct 202682204223226537
Wed, 28 Oct 20263522421431122626
Tue, 27 Oct 20266918817733181648
Mon, 26 Oct 2026292183356591738
Sun, 25 Oct 202643566260131
Sat, 24 Oct 20261220356073
Fri, 23 Oct 2026401709127164492
Thu, 22 Oct 202669162207540492
Wed, 21 Oct 202652218225470542
Tue, 20 Oct 202616981581212701,923
Mon, 19 Oct 202632133206660437
Sun, 18 Oct 202610556519400549
Sat, 17 Oct 20264425040100
Fri, 16 Oct 202653179219140465
Thu, 15 Oct 202651232244190546
Wed, 14 Oct 2026923742853043824
Tue, 13 Oct 20261701,3617294302,303
Mon, 12 Oct 202648264282800674
Sun, 11 Oct 20261673101390229
Sat, 10 Oct 202678143178130412
Fri, 9 Oct 202642152105115315
Thu, 8 Oct 202662194219210496
Wed, 7 Oct 20265313114592340
Tue, 6 Oct 2026105371345381551,014

1,455 vulnerabilities · Vendor: Microsoft

CVE-2026-83879High 7.0

Microsoft Windows 10 Version 1607: Local privilege escalation in Windows Overlay Filter

A race condition (CWE-362, CWE-416) in the Windows Overlay Filter component allows an authorized local user to elevate privileges. The attacker needs local access and low privileges, and the attack is rated as high complexity. Successful exploitation could lead to full compromise of confidentiality, integrity and availability on the affected system. The flaw is not remotely exploitable and no exploitation has been reported.

Microsoft · Windows 10 Version 1607

CVE-2026-83876High 7.8

Microsoft Windows Shell: Use-after-free leads to local privilege escalation

A use-after-free flaw (CWE-416) in the Windows Shell component allows a local attacker with a valid low-privilege account to elevate privileges. The CVSS base score is 7.8 (High), with high impact on confidentiality, integrity and availability. Exploitation requires a foothold on the system, such as a phished user or a compromised session, and is not possible remotely.

Microsoft · Windows Shell

CVE-2026-83874High 8.8

Windows Event Tracing: Remote Code Execution through heap buffer overflow

A heap-based buffer overflow in the Windows Event Tracing component allows a remote attacker to execute code on affected Windows 10, Windows 11 and Windows Server systems. Successful exploitation requires a user to take some action, such as opening crafted content, and no privileges. The CVSS base score is 8.8, and Microsoft rates exploitation as unlikely at publication.

Microsoft · Windows Event Tracing

CVE-2026-83873High 7.8

Windows Shell: Relative path traversal leads to local privilege escalation

A relative path traversal flaw (CWE-23) in Windows Shell allows an authorized local user to elevate privileges. An attacker needs a valid low-privilege account and local access, so this is typically a follow-up step after phishing or credential theft. Confidentiality, integrity and availability impact is rated high (CVSS 7.8); the CNA record covers multiple Windows 10, Windows 11 and Windows Server builds, including Windows 10 1607.

Microsoft · Windows Shell

CVE-2026-83872High 7.8

Windows 10 1607: Local elevation of privilege in TCP/IP stack

A flaw in the Windows TCP/IP stack, caused by an incorrect conversion between numeric types (CWE-681), allows an attacker with local access and a low-privilege account to elevate their privileges. The CVSS 3.1 base score is 7.8 (High), with high impact on confidentiality, integrity and availability. The attack is not directly reachable from the internet, but it is relevant wherever untrusted or low-privileged users can log on locally, such as kiosks and fixed-function devices.

Microsoft · Windows 10 1607

CVE-2026-83869Critical 9.8

Microsoft Windows DNS Server: Remote code execution via integer underflow

Microsoft Windows DNS Server contains an integer underflow (CWE-191) that allows an unauthenticated attacker to execute code remotely over the network. No user interaction is required, and Microsoft rates the CVSS 3.1 base score at 9.8 (Critical), although Microsoft's own severity is Important. Systems with the DNS Server role that are reachable from untrusted networks carry the highest risk.

Microsoft · Windows DNS Server

CVE-2026-83867High 7.8

Windows Push Notifications: Heap-based buffer overflow leads to privilege escalation

A heap-based buffer overflow in the Windows Push Notifications component allows an authorized local user to elevate privileges. Successful exploitation can give the attacker full control of the affected system, including confidentiality, integrity and availability. The attacker needs a local low-privilege account and local access, so the flaw is mainly a second-stage risk after an initial compromise.

Microsoft · Windows

CVE-2026-83866High 7.0

Microsoft Windows Win32k: Use-after-free allows local privilege escalation

A use-after-free vulnerability (CWE-416) in the Win32k kernel driver of Windows 10 version 1607 and Windows Server 2016 allows an authorized local user to elevate privileges. An attacker who can already run code with low privileges on the system can gain SYSTEM rights. Exploitation requires local access, so the risk is highest on multi-user systems and terminal servers.

Microsoft · Windows

CVE-2026-83863High 7.8

Microsoft Windows: Heap-based buffer overflow enables local privilege escalation

A heap-based buffer overflow (CWE-122) in Windows Servicing Stack Updates allows an authorized local attacker to elevate privileges. The CNA record lists Windows 10 versions 1607, 1809, 21H2 and 22H2, Windows 11 versions 23H2 to 26H2, and Windows Server 2012, 2012 R2 and 2016 as affected. An attacker needs local access with low privileges, for example a standard user account or malware already running on the system, and no user interaction is required. Successful exploitation can lead to full compromise of confidentiality, integrity and availability on the affected host.

Microsoft · Windows

CVE-2026-83862High 8.8

Windows Network Load Balancing: Use-after-free leads to code execution

Use-after-free vulnerability in the Windows Network Load Balancing (NLB) component. According to the CVE record, an unauthenticated attacker on an adjacent network can execute code without user interaction. Affected are Windows 10 Version 1607 and 1809 as well as several Windows Server releases with NLB. Some third-party sources list a network vector with CVSS 9.8, so the exposure should be verified.

Microsoft · Windows Network Load Balancing

CVE-2026-83861High 7.8

Microsoft Windows RDP: Heap-based buffer overflow enables local privilege escalation

A heap-based buffer overflow in the Windows Remote Desktop Protocol (RDP) component allows an authorized attacker with low privileges to elevate privileges to a higher level on the local system. Exploitation requires local access and a valid low-privileged account, and there is no user interaction. The vulnerability is not remotely exploitable, but an attacker who already has a foothold on a device (for example through a phished account or exposed RDP login) could gain full control of it.

Microsoft · Windows

CVE-2026-83860High 7.5

Windows GDI: Denial of Service through stack-based buffer overflow

Windows GDI, the Graphics Device Interface that Windows uses for 2D rendering, contains a stack-based buffer overflow (CWE-121). The flaw affects several supported Windows 10, Windows 11 and Windows Server versions, including Windows 10 1607, Windows Server 2016 and Windows Server 2012 R2. An unauthenticated attacker on the network can crash or hang affected systems without user interaction. According to the CNA score, the impact is limited to availability; confidentiality and integrity are not affected.

Microsoft · Windows GDI

CVE-2026-83859High 7.8

Microsoft Windows: Local privilege escalation via use-after-free in NTFS

A use-after-free flaw (CWE-416) in the Windows NTFS file system driver allows an attacker with local access and a low-privilege account to elevate privileges. Successful exploitation can lead to full control of the system, with high impact on confidentiality, integrity and availability. The attack is not reachable over the network and requires a valid local account, so the main risk lies on shared servers, terminal servers and multi-user PCs.

Microsoft · Windows

CVE-2026-83857High 7.8

Windows UDFS driver: Elevation of privilege by local attacker

A flaw in the Windows Universal Disk Format File System Driver (UDFS) allows an attacker with local access and a low-privilege account to elevate privileges, with high impact on confidentiality, integrity and availability (CVSS 7.8). UDF is used for optical discs and many removable media, so the driver is typically reached when such media are mounted. The memory-corruption class is inconsistently reported across sources (use after free in the description, CWE-121 in the record) and remains to be confirmed against the MSRC advisory.

Microsoft · Windows Universal Disk Format File System Driver (UDFS)

CVE-2026-83856High 8.1

Microsoft Windows: Out-of-bounds read in Windows Event Logging Service

An out-of-bounds read in the Windows Event Logging Service allows an unauthorized attacker to execute code over a network, according to the CVE record. Several Windows 11 branches and Windows Server 2022 and 2025 are affected. The NVD vector rates attack complexity as high and requires no privileges, but the sources disagree on whether user interaction is needed. No public proof of concept or known exploitation was found in the sources reviewed.

Microsoft · Windows

CVE-2026-83855High 7.5

Windows WLAN Service: Denial of service through integer underflow

An integer underflow in the Windows WLAN Service of Windows 11 and Windows Server 2025 allows an unauthenticated attacker to cause a denial of service over the network. The record states only an availability impact, with no confidentiality or integrity impact. The record does not say whether the attack must come from the same Wi-Fi radio segment, so reachability on wired-only hosts is unknown.

Microsoft · Windows

CVE-2026-83853High 7.0

Microsoft Windows: Use-after-free in Windows Hello allows privilege escalation

A use-after-free flaw in Windows Hello allows an authorized attacker to elevate privileges locally. An attacker with a low-privilege account on the affected device could gain higher privileges, potentially up to full control of the system. The attack requires local access and a high-complexity condition, and the vulnerability is not reachable from the internet.

Microsoft · Windows

Sources

The tracker combines official, freely usable data sources – updated continuously:

This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.

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