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Search Results (23681 CVEs found)
| CVE | Vendors | Products | Updated | CVSS v3.1 |
|---|---|---|---|---|
| CVE-2026-7840 | 1 Uvnc | 1 Ultravnc | 2026-07-09 | 9.8 Critical |
| UltraVNC repeater through 1.8.2.2 contains a global buffer overflow in its embedded HTTP administration server. The functions wi_senderr() and wi_replyhdr() in repeater/webgui/webutils.c write the caller-supplied HTTP request URI into a fixed 1000-byte global buffer (hdrbuf) via unchecked sprintf calls. The HTTP receive buffer accepts URIs up to approximately 150 KB (WI_RXBUFSIZE = 153600), so an unauthenticated attacker who can reach the repeater HTTP port (default TCP 80) can overflow hdrbuf by at least 500 bytes with a single HTTP request containing a URI of 1500 bytes or longer, corrupting adjacent .bss-segment globals. The overflow occurs before any authentication check, making it reachable without credentials. A remote, unauthenticated attacker can achieve arbitrary code execution on the host running the repeater. | ||||
| CVE-2026-7838 | 1 Uvnc | 1 Ultravnc | 2026-07-09 | 8.8 High |
| UltraVNC viewer through 1.8.2.2 contains an integer overflow leading to a heap buffer overflow in the RFB protocol failure-response parsing path. In vncviewer/ClientConnection.cpp, the 4-byte network-supplied reasonLen field (type CARD32) is passed as reasonLen+1 to CheckBufferSize(). Because both operands are unsigned 32-bit, a reasonLen of 0xFFFFFFFF overflows to 0, causing CheckBufferSize to allocate only 256 bytes. The subsequent ReadString(m_netbuf, reasonLen) call then performs ReadExact for the original 4 GiB length into that 256-byte heap buffer. This overflow is reachable via rfbConnFailed (auth-scheme negotiation) and rfbVncAuthFailed (post-handshake) message types without successful authentication. A malicious VNC server, or any man-in-the-middle on the RFB stream, can trigger this condition when the victim viewer connects, potentially resulting in remote code execution as the user running the viewer. The crash was confirmed with AddressSanitizer on a portable reproduction harness (heap-buffer-overflow WRITE at offset 256). | ||||
| CVE-2026-14362 | 1 Hashicorp | 1 Shared Library | 2026-07-09 | 4.9 Medium |
| HashiCorp memberlist before version 0.6.0 is vulnerable to a denial-of-service issue in its push/pull state handling that may allow an attacker with network access to the gossip port to exhaust memory on a receiving node and cause the process to terminate. This vulnerability (CVE-2026-14362) is fixed in memberlist 0.6.0. | ||||
| CVE-2026-11856 | 2 Curl, Redhat | 2 Curl, Hummingbird | 2026-07-09 | 9.8 Critical |
| Successfully using libcurl to do a transfer to a specific HTTP origin (`hostA`) with **Digest** authentication and then changing the origin to a different one (`hostB`) for a second transfer, reusing the same handle, makes libcurl wrongly pass on the `Authorization:` header field meant for `hostA`, to `hostB`. | ||||
| CVE-2026-50656 | 1 Microsoft | 1 Malware Protection Engine | 2026-07-08 | 7.8 High |
| Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "RoguePlanet ". | ||||
| CVE-2026-42824 | 1 Microsoft | 2 365 Copilot, Copilot | 2026-07-08 | 6.5 Medium |
| Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to disclose information over a network. | ||||
| CVE-2026-44801 | 1 Microsoft | 30 Remote Desktop, Remote Desktop Client, Windows 10 1607 and 27 more | 2026-07-08 | 7.5 High |
| Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network. | ||||
| CVE-2026-44808 | 1 Microsoft | 2 Windows 11 26h1, Windows 11 26h1 | 2026-07-08 | 7.8 High |
| Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate privileges locally. | ||||
| CVE-2026-44811 | 1 Microsoft | 2 Windows 11 26h1, Windows 11 26h1 | 2026-07-08 | 7.8 High |
| Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate privileges locally. | ||||
| CVE-2026-42974 | 1 Microsoft | 11 Windows 11 23h2, Windows 11 23h2, Windows 11 24h2 and 8 more | 2026-07-08 | 8.1 High |
| Integer overflow or wraparound in Windows Performance Monitor allows an unauthorized attacker to execute code over a network. | ||||
| CVE-2026-42973 | 1 Microsoft | 21 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 18 more | 2026-07-08 | 5.5 Medium |
| Exposure of sensitive information to an unauthorized actor in Windows Push Notifications allows an authorized attacker to disclose information locally. | ||||
| CVE-2026-42970 | 1 Microsoft | 26 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 23 more | 2026-07-08 | 5.5 Medium |
| Exposure of sensitive information to an unauthorized actor in Windows Push Notifications allows an authorized attacker to disclose information locally. | ||||
| CVE-2026-42971 | 1 Microsoft | 21 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 18 more | 2026-07-08 | 5.5 Medium |
| Exposure of sensitive information to an unauthorized actor in Windows Push Notifications allows an authorized attacker to disclose information locally. | ||||
| CVE-2026-42914 | 1 Microsoft | 26 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 23 more | 2026-07-08 | 5.3 Medium |
| Out-of-bounds read in Windows Kerberos allows an authorized attacker to deny service over a network. | ||||
| CVE-2026-42913 | 1 Microsoft | 13 Remote Desktop, Windows 11 23h2, Windows 11 23h2 and 10 more | 2026-07-08 | 7.5 High |
| Concurrent execution using shared resource with improper synchronization ('race condition') in Remote Desktop Client allows an unauthorized attacker to execute code over a network. | ||||
| CVE-2026-42916 | 1 Microsoft | 26 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 23 more | 2026-07-08 | 7.8 High |
| Integer overflow or wraparound in Windows NT OS Kernel allows an authorized attacker to elevate privileges locally. | ||||
| CVE-2026-42909 | 1 Microsoft | 30 Remote Desktop, Remote Desktop Client, Windows 10 1607 and 27 more | 2026-07-08 | 7.5 High |
| Concurrent execution using shared resource with improper synchronization ('race condition') in Remote Desktop Client allows an unauthorized attacker to execute code over a network. | ||||
| CVE-2026-42907 | 1 Microsoft | 18 Windows 10 1809, Windows 10 21h2, Windows 10 21h2 and 15 more | 2026-07-08 | 6.5 Medium |
| Exposure of sensitive information to an unauthorized actor in Windows Shell allows an authorized attacker to disclose information over a network. | ||||
| CVE-2026-42837 | 1 Microsoft | 18 Windows 10 1809, Windows 10 21h2, Windows 10 21h2 and 15 more | 2026-07-08 | 7.8 High |
| Out-of-bounds read in Windows Projected File System Filter Driver allows an authorized attacker to elevate privileges locally. | ||||
| CVE-2026-50507 | 1 Microsoft | 25 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 22 more | 2026-07-08 | 6.8 Medium |
| Missing authentication for critical function in Windows BitLocker allows an unauthorized attacker to bypass a security feature with a physical attack. | ||||