Please find below the links to the different version of the Windows Patches for CODWaW.

Latest (1.5)

Current release is: 1.5

Call of Duty: World at War PC Patch 1.5 – Sponsored by Treyarch & GGL
Submitted: July 17th, 2009

Changelog:

3 new MP maps: Banzai, Corrosion, Sup Pens!
1 new Zombie map with a new weapon (the Wunderwaffe DG-2), flaming Hell Hounds, new traps, and more: Shi No Numa!
CO-OP hosts can now kick players from their lobby
Improved dog spawning in MP
Addressed an issue with Zombie pathing
Fixed an instance of the player model displaying incorrectly
Some unhandled exception errors have been addressed
Improved server browser’s refresh functionality when the Source is set to ‘Favorites’
Added support for CODTV
“cg_DrawFPS 1” now only displays FPS and cg ms/frame
Added RCon command "teamstatus" to display players’ team information
Mods: Added joinsquad script function
Mods: Players can now join CO-OP lobbies that are hosting map names with more than eighteen characters
Mods: Users can now load custom maps when the usermaps folder contains fifty or more custom maps
Mods: Removed the loading of duplicate assets that contributed to the ‘2048 materials’ error
Mods: Increased the amount of mods displayable in the Mods menu
Mods: Fixed a crash related to the mod.arena file

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3 new Multiplayer maps: Kneedeep, Nightfire, Station!
Nazi Zombies map with more weapons, Perks-a-Cola machines, and electroshock defenses: Verrückt!
Improved spawning logic.
Auto balancing improvements. Players are no longer auto balanced while completing objectives.
Mods: IWD's can be placed in the usermaps folder.
Mods: Hold Breath / Sprint functions as intended.
Mods: MissingAssets.csv is generated when maps are run with developer set to 1.
Fixed lag caused by shooting at tanks.
All rifle grenades fired during the first 15 seconds of Search & Destroy will be duds.
Players who equip a Bouncing Betty and melee teammates in Hardcore game modes are now credited with a team kill penalty.
Players are now deducted 200 points for team killing the bomb planter/defuser in Hardcore Search & Destroy.
Martyrdom no longer causes direct impact deaths in Hardcore modes.
"Bayonet jumping" has been disabled.

1.3 Patch

Changelog:

/record and /demo enabled in MP.
Server Log File improvements, including:
- Team Names on Kill loglines.
- Round Win and Loss.
- Timestamps.
Additional action logging (took flag, destroyed headquarters, planted bomb, etc).
Improved sound initialization for Vista - fixes loss of sound for audio devices set higher than 16 bit 48000 Hz.
Screenshots no longer overwrite each other.
Tweaked autobalance on select game modes.

Changelog:

Free Multiplayer Map! The tide is out and the sun is high – this daytime version of Makin sheds new light on the battle!
Fixed exploits that allowed for power ranking servers.
Fixed router related server authentication errors.
Fixed HTTP Redirect functionality for downloading mods
Fixed sound device crashes stemming from Emulated Sound Devices
Fixed exploit which allowed players to color their name tag.
Hits now register properly while targeted player is leaning.
Enabled /cg_drawfps in multiplayer games.
Fixed command-line +connect functionality
/cg_fov no longer resets to the default value in between matches.
Dedicated servers automatically reconnect to the Master Server in case the Master Server resets.
"Accept Game Invite" is bound to its default key, F10.
Implemented fix for attempting to join password protected servers from the server browser.
Fine tuned Bolt-Action Rifles for balance.
Screenshots no longer overwrite each other.
Fixed various multiplayer map related issues and exploits.