CVE-2026-49800
published 2026-07-14CVE-2026-49800: Integer overflow or wraparound in Windows Web Proxy Auto-Discovery Protocol (WPAD) allows an authorized attacker to elevate privileges locally.
PriorityP344high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.24%
15.2th percentile
Integer overflow or wraparound in Windows Web Proxy Auto-Discovery Protocol (WPAD) allows an authorized attacker to elevate privileges locally.
Affected
19 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10_1809 | < 10.0.17763.9020 | 10.0.17763.9020 |
| microsoft | windows_10_21h2 | < 10.0.19044.7548 | 10.0.19044.7548 |
| microsoft | windows_10_22h2 | < 10.0.19045.7548 | 10.0.19045.7548 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.9020 | 10.0.17763.9020 |
| microsoft | windows_10_version_21h2 | >= 10.0.19044.0 < 10.0.19044.7548 | 10.0.19044.7548 |
| microsoft | windows_10_version_22h2 | >= 10.0.19045.0 < 10.0.19045.7548 | 10.0.19045.7548 |
| microsoft | windows_11_24h2 | < 10.0.26100.8875 | 10.0.26100.8875 |
| microsoft | windows_11_25h2 | < 10.0.26200.8875 | 10.0.26200.8875 |
| microsoft | windows_11_26h1 | < 10.0.28000.2269 | 10.0.28000.2269 |
| microsoft | windows_11_26h1 | < 10.0.28000.2525 | 10.0.28000.2525 |
| microsoft | windows_11_version_24h2 | >= 10.0.26100.0 < 10.0.26100.8875 | 10.0.26100.8875 |
| microsoft | windows_11_version_25h2 | >= 10.0.26200.0 < 10.0.26200.8875 | 10.0.26200.8875 |
| microsoft | windows_11_version_26h1 | >= 10.0.28000.0 < 10.0.28000.2525 | 10.0.28000.2525 |
| microsoft | windows_server_2019 | < 10.0.17763.9020 | 10.0.17763.9020 |
| microsoft | windows_server_2019 | >= 10.0.17763.0 < 10.0.17763.9020 | 10.0.17763.9020 |
| microsoft | windows_server_2022 | < 10.0.20348.5386 | 10.0.20348.5386 |
| microsoft | windows_server_2022 | >= 10.0.20348.0 < 10.0.20348.5386 | 10.0.20348.5386 |
| microsoft | windows_server_2025 | < 10.0.26100.33158 | 10.0.26100.33158 |
| microsoft | windows_server_2025 | >= 10.0.26100.0 < 10.0.26100.33158 | 10.0.26100.33158 |
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VulDB
Microsoft Windows up to Server 2025 WPAD integer overflow
vuldb·2026-07-19·CVSS 7.8
CVE-2026-49800 [HIGH] Microsoft Windows up to Server 2025 WPAD integer overflow
A vulnerability was found in Microsoft Windows up to Server 2025 and classified as critical. This affects an unknown function of the component WPAD. Such manipulation leads to integer overflow.
This vulnerability is uniquely identified as CVE-2026-49800. The attack can be launched remotely. No exploit exists.
GHSA
Integer overflow or wraparound in Windows Web Proxy Auto-Discovery Protocol (WPAD) allows an authorized attacker to elevate privileges locally.
ghsa_unreviewed·2026-07-14
CVE-2026-49800 [HIGH] CWE-122 Integer overflow or wraparound in Windows Web Proxy Auto-Discovery Protocol (WPAD) allows an authorized attacker to elevate privileges locally.
Integer overflow or wraparound in Windows Web Proxy Auto-Discovery Protocol (WPAD) allows an authorized attacker to elevate privileges locally.
No detection rules found.
No public exploits indexed.
Rapid7
Patch Tuesday - July 2026
blogs_rapid7·2026-07-14·CVSS 9.6
CVE-2026-58617 [CRITICAL] Patch Tuesday - July 2026
Microsoft is publishing 622 vulnerabilities on July 2026 Patch Tuesday , including a record-breaking 416 Windows vulnerabilities. Microsoft is aware of exploitation in the wild for two of the vulnerabilities published today, both of which are listed on CISA KEV, as well as public disclosure for one other. As usual, browser vulns are not included in the Patch Tuesday count above. Rapid7 noted last month that Microsoft no longer enumerates Chromium CVEs in the Security Update Guide. However, Microsoft has now taken the pursuit of minimalism much further, since today’s Security Update Guide no longer lists out even Microsoft vulnerabilities! Instead, we now receive a summary table of vulnerability counts by product family, as well as a new slimline “Notable CVEs” section. All of this only ser
Sans Isc
Microsoft Patch Tuesday July 2026 - The AI Acopolypse is Here , (Tue, Jul 14th)
blogs_sans_isc·2026-07-14·CVSS 6.1
CVE-2026-56155 [MEDIUM] Microsoft Patch Tuesday July 2026 - The AI Acopolypse is Here , (Tue, Jul 14th)
Microsoft Patch Tuesday July 2026 - The AI Acopolypse is Here
Published: 2026-07-14. Last Updated: 2026-07-14 19:14:58 UTC
by Johannes Ullrich (Version: 1)
0 comment(s)
This patch Tuesday includes a staggering 622 vulnerabilities, not including another 427 vulnerabilities in Chromium, affecting Microsoft's Edge browser. 62 of the vulnerabilities are rated critical. One was disclosed before today, and two have already been exploited.
Given the large number of vulnerabilities, it is difficult to point out "noteworthy" issues.
Already exploited vulnerabilities:
CVE-2026-56155 : Active Directory Federation Services Elevation of Privilege Vulnerability. This is an important (not critical) vulnerablity.
CVE-2026-56164: Microsoft SharePoint Server Elevation of Privilege Vulnerability. Micr
2026-07-14
Published