Minimum OS: Windows 7

UltraVNC 1.8.2.1

• Security Several CVEs fixed. LoadLibrary search path restricted to prevent DLL hijacking.
• Libraries Updated: OpenSSL 3.6.2 · libsodium 1.0.22 · libjpeg‑turbo 3.1.4 · liblzma 5.8.3 · zstd 1.5.7 · zlib 1.3.1.
• Unicode Chat .
• Unicode File Transfer completely rewritten for Unicode: filenames in any language (Chinese, Arabic, Cyrillic, emoji, …), long path support, at least 2× faster, folder ZIP/Unzip with progress indicator.
• Unicode International keyboard input: Cyrillic, Greek, Hebrew, Arabic, Thai, Korean and the full Unicode keysym range now handled correctly on both viewer and server.
• Feature UI translations: French, German, Spanish, Chinese. (ongoing)
• Fix Various bug fixes: service mode file browsing, RDP session compatibility, IPv6, kiosk mode, RSAAES auth, accessibility cursor.

 

 

SHA256 hash of UltraVNC_1821_X86_Setup.exe:
d936bd2b05cbc627fd3e862d01d596a44e2e853638058323793ac4fb5bee0d9d

MD5 hash of UltraVNC_1821_X86_Setup.exe:
a6d305b7ea915f725cb95a87780292ed

SHA256 hash of UltraVNC_1821_X64_Setup.exe:
7c12518b05a25f5cd502fa21818c7271c766cacff312cbc47bc3942468b14919

MD5 hash of UltraVNC_1821_X64_Setup.exe:
daa15d4c617ff767b5a30f498f923152

SHA256 hash of UltraVNC_1821.zip:
bad6e9668af6c26d192885d4e83a8d77bf9b783a19e5b1e918ffc8d302445f33

MD5 hash of UltraVNC_1821.zip:
9f36e0c9dc25c6c177289a5735e54406

SHA256 hash of UltraVNC_1821_x86_Setup.msi:
da172080d5c6e557aaf5745ce29db63ab873c76fb656c3596140cead338bbf78

MD5 hash of UltraVNC_1821_x86_Setup.msi:
f5d9b9130c30125b9647411d403a0afd

SHA256 hash of UltraVNC_1821_x64_Setup.msi:
cc7a41d546523dc5e33324b12a23d2fbb2d0a9b0b9f7c08b0e242ebe5da3c2b9

MD5 hash of UltraVNC_1821_x64_Setup.msi:
7c9ea5dcb2d164eaef60c3a62211d51b

 

INSTALLERS

Zipped x86/x64 binaries

 

UltraVNC – Changelog

1.8.2.1 – May 2026

• CVE-2026-3787 CWE-428
• remove creation empty folder for snapshots on init FT history change font setting

1.8.2.0 – May 2026

• Bridge removed (not functional, moved to 1.9.x branch)

1.8.1.1 – May 2026

• FileTransfer fixes
• Use Windows 7 compatible zip/unzip option
• Security fix

1.8.1.0 –May 2026

• FileTransfer fixes

1.8.0.9 – April 2026

• FileTransfer fixes

1.8.0.8 – April 2026

• Fix logging: correct initialization order — log file now properly opened on startup (service + app mode)
• Fix #340: logging not active on server startup
• Fix #259: Desktop/Downloads show 'media not present' when running as service
• Fix #189: file transfer fails after window close in kiosk/no-shell mode
• Fix: prevent International keys and Alternate keyboard from being enabled simultaneously
• Fix new zip/unzip bug
• Fix FT: Refresh button misaligned on resize; stale !UVNCDIR- entry after folder receive
• Fix virtual key (virtKey!=69)
• File Transfer: update zip/unzip with Unicode + long filename support
• File Transfer: add progress indication while folder is being zipped
• File Transfer: add Refresh button
• File Transfer: show file extension and date columns
• Update CMake and Qt project files
• Installer and minor changes

1.8.0.6 – April 2026

• FileTransfer fix folder transfer
• OpenSSL 3.6.2
• libsodium 1.0.22
• setpasswd/createpasswd write to %ProgramData% instead of current folder
• Fix path mslogon

1.8.0.5 – April 2026

• FileTransfer: bigger buffers needed for UTF-8/UTF-16
• UI Unicode fixes
• Unicode logging
• Baseline library updates:
  • libjpeg-turbo 3.1.4.1
  • liblzma 5.8.3
  • libsodium 1.0.21#1
  • zlib 1.3.1
  • zstd 1.5.7
  • OpenSSL 3.6.1#3

1.8.0.4 – April 2026

• Unicode and encryption plugin
• Unicode UI

1.8.0.3 – March 2026

• Sync server and viewer keyboard handling — fixes:
  • Incorrect handling of Cyrillic (0x06a1-0x06ff) — treated as Unicode instead of X11 keysym
  • Incorrect handling of Greek (0x07a1-0x07f9)
  • Incorrect handling of Hebrew (0x0cdf-0x0cfa)
  • Incorrect handling of Arabic (0x05ac-0x05fe)
  • Incorrect handling of Thai (0x0da1-0x0df9)
  • Incorrect handling of Korean (0x0ea1-0x0eff)
  • Unicode keysyms (0x01000000+) not handled

1.8.0.2 – March 2026

• Unicode viewer fixes

1.8.0.0 – March 2026

• FileTransfer, Chat, keyboard Unicode support
• Minor optimizations
• VNCViewer Unicode build

1.7.1.10 – February 2026

• FileTransfer Unicode
• Fix FileTransfer failure on RDP sessions
• Use system fonts for chat

1.7.1.9 – February 2026

• FileTransfer Unicode
• Mark inaccessible folders red in FileTransfer
• Use secure copy_s functions
• LoadLibrary: limit path search

1.7.1.7 – February 2026

• Copy/paste removed
• Extended FileTransfer dialog

1.7.1.6 – February 2026

• Longer host field
• Two-way copy/paste
• Mark inaccessible folders red in FileTransfer
• Fix save/load config file
• Accept/Refuse: default changed to query

1.7.1.5 – February 2026

• Speed up FileTransfer
• Fix color cursors
• Fix FileTransfer and unreadable folders
• Fix viewer load/save settings, encryption saving, buffer overrun
• Viewer: larger host field

1.7.1.1 – January 2026

• UniChat (Unicode chat)
• Copy/paste files
• Listen mode fix

1.7.1.0 – December 2025

• FileTransfer optimized (minimum 2x faster)
• Bridge mode
• Translations (French, German, Spanish, Chinese)
• Use proper INI path (ultravnc.ini) + portable mode
• Fix: Accessibility enlarged cursor showed a black rectangle
• Fix IPv6
• Fix 'Use Only Default ConfigFile' option
• Fix quick options
• Update libraries:
  • libjpeg-turbo: 3.1.2
  • liblzma: 5.8.1
  • OpenSSL: 3.6.0#3
  • zlib: 1.3.1
  • zstd: 1.5.7

---

1.6.4.0 – June 2025

• Update viewer layout
• Viewer, SessionDialog wrong size after dpi change #278
• Fix to small msg buffer size
• Fix big border (ThomasLevering)
• Update GNOME /QEMU display settings text + zlibbuffer was unneeded recrated
• Fix vncviewer crash #58
• FIX empty password detection, also for SC
• Fix bug in undefer_input() that misplaced the input state. (#272)
• Do not accept Anonymous TLS sub-types during VeNCrypt authentication (#274)
  But allow fallback to standard RFB types (e.g. rfbVncAuth)

---

1.6.1.0 – May 2025

• Fixed Chat Japanese chars
• Fixed saving listenport
• Fixed saving custom messages accept/reject
• Fixed save settings should not reload defaults

---

1.6.0.0 – April 2025

• Updated dev version to release.

---

1.5.0.18-dev – April 2025

• Use single DLL instead of V2 version.

---

1.5.0.17-dev – April 2025

• International keyboard fix.

---

1.5.0.16-dev – April 2025

• Viewer defaults were not loading.

• Possible keyboard fix (to verify) — supports characters like +ěščřžýáíé=´.

• Renamed authSSPV2 loggingV2.dll to fix Event Viewer messages on x64.

• Echoserver fix.

• Fix for broken sc_20 build.

Keyboard Notes:

• The "international keyboard" option must be enabled on the server.

• Only tested using a virtual Czech keyboard.

Bug Detail:

• Viewer defaults missing caused issues like incorrect INI viewonly mode and wrong encoding settings.

---

1.5.0.15-dev – March 2025

• File Transfer: Fixed buffer overflow and memory leak (#254).

• Added service to settings.

• Log file movement fix.

---

1.5.0.14-dev – March 2025

• Slider fix.

• Fixed DSMPlugin and MS-Logon settings when running as standalone.

• Resolved bug where own messages weren’t logged due to logfile move.

---

1.5.0.13-dev – March 2025

• Moved log file to the ultravnc.ini folder.

---

1.5.0.12-dev – March 2025

• File Transfer window size fix.

• Fix for crash on Microsoft Windows 7.

• Installer: Added "Run as admin" to settings shortcut.

• Installer: .ini file now copied to ProgramData before service starts.

---

1.5.0.10-dev – March 2025

• DSMPlugin configuration fix.

• Fixed "Apply Save Settings" functionality.

• Clearing admin password also clears VNC password.

• ISOtime added in About window + smaller max size.

---

1.5.0.9-dev – March 2025

• Removed installer popups.

• Fixed issue where some settings weren’t saved correctly.

---

1.5.0.8-dev – March 2025

• Save settings fix.

• Typo correction.

• Added Bluesky integration.

---

1.5.0.7-dev – March 2025

• Command line can now overwrite default values.

• Settings dialog can run standalone.

• Viewer: Focus set to host input field.

• General bug fixes.

---

1.5.0.5-dev – February 2025

• Fallback to old folder if ultravnc.ini is missing.

• Command line options take priority in Viewer.

• Encryption fix for viewonly (VNC password).

• UI/UX: Settings dialog enable/disable cosmetic fix.

• Plugin architecture check (32/64-bit) before use.

• Chunked messages and default client certs allowed in TLS (#250).

• Rules fix.

---

1.5.0.4-dev – February 2024

• UI update.

• Moved ini file to ProgramData.

• Bug fixes (see Git).

• Added admin password functionality.

---

1.5.0.3-dev

• UI corrections.

---

1.5.0.2-dev

• Merged IPv4 & IPv6 into a single EXE with switchable property.

• Fixed RealVNC UDP port usage.

• UI improvements: layout and icons.

---

1.5.0.1-dev

• Reverted fonts in File Transfer.

• Fullscreen: Added Chat and File Transfer to topbar.

---

1.5.0.0-dev

• DirectX reconnect fix.

• Added extra links.

• Text/version info fixes.

• Switched to vcpkg for easier library maintenance.

• Fixed stack corruption (#185).

---

1.4.4.0-dev

• Code cleanup.

• UI spellcheck and standardization.

• TLS: Added CertVerifyCertificateChainPolicy API (#144).

• Switched to Arial font.

• TLS-encrypted transport via VeNCrypt authentication (#142).

• WIP: RSA-AES auth & encryption (#139).

• Fixed typo: "Repetear" → "Repeater" (#138).

• Windows Recovery Environment (WinRE 10) fix.

• Snapshot naming now sortable by date.

• Unified omnithread usage for Server and Viewer.

• Reinit D3D device on invalid pre-update (#130).

• SC: UAC restoration with try/catch.

• Scrollbar added to properties.

• Fixed group default settings load order.

• SC UAC reset fix.

• Able to connect to Debian v12 "bookworm" via WayVNC (#133).

  

License

GNU GENERAL PUBLIC LICENSE (GPL)

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

https://www.gnu.org/licenses