CVE-2021-40449
7.8 HIGHWin32k Elevation of Privilege Vulnerability
Published: 2021-10-13 · Last updated: 2026-06-17
Severity and scoring
- CVSS
- 7.8 HIGH
- Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CWE
- CWE-416
Affected products
| Vendor | Product |
|---|---|
| microsoft | windows_10_1507, windows_10_1607, windows_10_1809 |
Description
Win32k Elevation of Privilege Vulnerability
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-40449
- [Exploit reference]http://packetstormsecurity.com/files/164926/Win32k-NtGdiResetDC-Use-After-Free-Local-Privilege-Escalation.html
- [Patch]https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40449
- [Exploit reference]http://packetstormsecurity.com/files/164926/Win32k-NtGdiResetDC-Use-After-Free-Local-Privilege-Escalation.html
- [Patch]https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40449
- [Other]https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-40449
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- CVE-2026-49161 — Improper access control in Microsoft PC Manager allows an authorized attacker to bypass a security feature locally (7.8 HIGH)
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Same CWE
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- CVE-2026-10639 — In Zephyr's native IPv4 stack, icmpv4_handle_echo_request() in subsys/net/ip/icmpv4.c builds an echo-reply packet (reply), hands it to ne... (4.8 MEDIUM)
- CVE-2026-10638 — subsys/net/ip/icmpv6.c reads the network interface from a net_pkt after that packet has been handed to net_try_send_data() (5.9 MEDIUM)
- CVE-2026-10637 — subsys/net/ip/ipv6_mld.c:mld_send() read the packet interface via net_pkt_iface(pkt) after net_send_data(pkt) returned successfully (5.9 MEDIUM)
- CVE-2026-10636 — In Zephyr's IPv4 IGMP implementation, igmp_send() in subsys/net/ip/igmp.c read the network interface back out of the packet via net_pkt_i... (3.7 LOW)