CVE-2026-45602

CVE-2026-45602 is a critical-severity vulnerability in Microsoft Windows 10 1607 with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-349.

Key facts

• Severity: Critical (CVSS 3.x base score 9.1)
• EPSS exploit prediction: 0% (30th percentile)
• Actively exploited: Not listed in CISA KEV
• EU (EUVD) id: EUVD-2026-35562
• Weakness: CWE-349
• Affected product: Microsoft Windows 10 1607
• Published: 2026-06-09
• Last modified: 2026-07-20

Description

No cwe for this issue in Windows DHCP Server allows an unauthorized attacker to perform tampering over a network.

Frequently asked questions

What is CVE-2026-45602?

No cwe for this issue in Windows DHCP Server allows an unauthorized attacker to perform tampering over a network.

How severe is CVE-2026-45602?

CVE-2026-45602 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-45602 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-45602?

CVE-2026-45602 primarily affects Microsoft Windows 10 1607. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-45602?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-45602 have an EU (EUVD) identifier?

Yes. CVE-2026-45602 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35562.

When was CVE-2026-45602 published?

CVE-2026-45602 was published on 2026-06-09 and last updated on 2026-07-20.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45602

Affected products (20)

• cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*
• cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*
• cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:*
• cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:*
• cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:*
• cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:*
• cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*

More vulnerabilities in Microsoft Windows 10 1607

• CVE-2026-57092 — Critical (CVSS 9.9): Use after free in Windows VMSwitch allows an authorized attacker to elevate privileges over a network.
• CVE-2026-65791 — Critical (CVSS 9.8): Heap-based buffer overflow in Windows iSCSI Target Service allows an unauthorized attacker to execute code over a…
• CVE-2026-62893 — Critical (CVSS 9.8): Use after free in Windows Deployment Services allows an unauthorized attacker to execute code over a network.
• CVE-2026-62878 — Critical (CVSS 9.8): Stack-based buffer overflow in Windows DNS allows an unauthorized attacker to execute code over a network.
• CVE-2026-56190 — Critical (CVSS 9.8): Use of uninitialized resource in Windows RDP allows an unauthorized attacker to execute code over a network.
• CVE-2026-56188 — Critical (CVSS 9.8): Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Server Network…

All CVEs affecting Microsoft Windows 10 1607 →

Other CWE-349 vulnerabilities

• CVE-2026-42960 — Critical (CVSS 10.0): NLnet Labs Unbound up to and including version 1.25.0 is vulnerable to poisoning via promiscuous records for the…
• CVE-2026-41120 — Critical (CVSS 9.8): Dell Wyse Management Suite, versions prior to WMS 5.5 HF1, contain an Acceptance of Extraneous Untrusted Data With…
• CVE-2026-50252 — Critical (CVSS 9.3): In NLnet Labs Unbound 1.4.22 up to and including 1.25.1, UDP source port is randomized and intended to serve as a…
• CVE-2025-5994 — High (CVSS 8.7): A multi-vendor cache poisoning vulnerability named 'Rebirthday Attack' has been discovered in caching resolvers that…
• CVE-2025-40778 — High (CVSS 8.6): Under certain circumstances, BIND is too lenient when accepting records from answers, allowing an attacker to inject…
• CVE-2025-40776 — High (CVSS 8.6): A `named` caching resolver that is configured to send ECS (EDNS Client Subnet) options may be vulnerable to a…

Browse all CWE-349 vulnerabilities →