Version History

ClamXAV v3.5.5 - 21st February 2023
Security update for the bundled ClamAV scanning engine
ClamXAV v3.5.4 - 6th February 2023
Fully fixed naming of Login Items on macOS 13 Ventura
Fixed a few minor issues with the uninstaller
Fixed the issue with Full Disk Access prompts
Special thanks to Mike Bombich of Bombich Software for his assistance.
ClamXAV v3.5.3 - 17th January 2023
Improved recognition of Full Disk Access permissions - particularly on MDM managed Macs.
XAV command line tool has moved inside the main app bundle now.
/Applications/ClamXAV.app/Contents/MacOS/XAV
Improved naming of Login Items on macOS 13 Ventura.
This may require using the full installer
Added ability to scan arbitrary files from the XAV command line (beta - please give feedback).
/Applications/ClamXAV.app/Contents/MacOS/XAV --scan /paths/to/scan
ClamXAV v3.5.2 - 10th November 2022
Reverted a change from 3.5.1 which resulted in additional Full Disk Access prompts for part of ClamXAV's scanning engine.
ClamXAV v3.5.1 - 8th November 2022
Improved support for macOS 13 Ventura
Improved handling of Full Disk Access checks and messaging
Fix for 'No customer ID' error from XAV command line tool
Fix for engine installer not working on Mac OS X 10.13 (High Sierra)
See also the following updates from ClamXAV v3.5 released on 27th September 2022 and subsequently withdrawn.
Long-term workaround for Apple's kernel panic issue
Visual improvements to the ClamXAV app icon
Fix typo in Czech translation
Improve detection capabilities
Improve stability
Fixed two minor vulnerabilities on website - thanks to report by Gaurang Maheta
ClamXAV v3.4 - 22nd April 2022
Further stability on Apple Silicon Macs
Improved security of in-app update process
Added ability to email a designated contact upon malware detection
We're rolling this out to business customers first. Support for Home users coming soon.
Added pruning of reports database to XAV command-line tool
/usr/local/ClamXAV3/bin/XAV --prune-logs NNN
where NNN is the number of days to keep [default is 120]
ClamXAV v3.3.1 - 20th December 2021
Improved stability, particularly on M1 Macs
Improved scanning speed and accuracy
ClamXAV v3.3 - 20th September 2021
Fixed the "About" box crash
Support for offline database updates (business licence only)
Improved stability under scheduling
Improved handling of false positives
Expanded coverage for Sentry
ClamXAV v3.2 - 1st March 2021
Now runs fully natively on M1 Macs
New Big Sur-style app icon for ClamXAV
Considerably reduced CPU usage
Minor visual tweak for macOS 11 Big Sur
Fixed intermittent issue with the reports window flashing
Removed minimise button on Preferences window for compliance with Apple's HIG
Added French localisation for "Scan with ClamXAV" item in the Services menu
Miscellaneous fixes and improvements
ClamXAV v3.1.2 - 11th November 2020
Reduced CPU usage
Fix for issues with an empty sidebar and crashing database updates
Fixed issue preventing external drives/volumes being ejected during a scan
Sentry will no longer automatically scan Audio CDs (remember them?)
ClamXAV v3.1.1 - 7th October 2020
Improvements in CPU usage
Improvements in Time Machine volume recognition
Improvements in handling false positives
Fix for Full Disk Access menu item showing up (disabled) on macOS before 10.14
Fixed typos in French
Security update details:
  Affected parts: Privileged Helper Tool and Privileged Helper Tool Updater
  Available for: macOS 10.10 and later
  Impact: A malicious application may be able to execute arbitrary code with system privileges.
  Description: A local privilege escalation issue was resolved with improved client verification in the privileged helper tools.
     Thanks to Csaba Fitzl (@theevilbit) of Offensive Security for reporting this to us.
ClamXAV v3.1 - 11th August 2020
Added support for macOS 11 (Big Sur)
Additional log file processing for business customers
Improved QuickScan speed
Updated French localisation
Updated Portugese translation
Fixed typo in German localisation
Improvements in multi-user setups
Improvements to handling of virtual machine images
References to "Internet" are now "internet", inline with current practice and style guidelines.
References to "expiry date" are now "renewal date"
Fixed intermittent issue where main window may open far too small
Fixed issue where clean files may show in the infection list with "(null)" as the infection name.
Fixed intermittent issue where Quick Scan would appear like it's constantly in progress.
Fixed an intermittent issue that caused it to look like ClamXAV had hung at the end of a QuickScan
Fixed intermittent issue with open panel not showing
Fixed an issue preventing an item showing up as deleted
Fixed issue with "Last Scanned Date" on macOS 10.15
An item's "Last Scanned Date" now shows relative dates
ClamXAV will now report meta-data on malware detections. Note that we're tracking malware, not you!
See our Privacy Policy for more details.
ClamXAV v3.0.15 - 18th December 2019
Improved scan times on macOS 10.15 Catalina
Improved reliability of Full Disk Access check
Improved removal of configuration profiles
Fixed intermittent issue where Sentry wouldn't honour exclude/ignore settings
Fixed intermittent issue where Sentry would attempt to scan external/network disks incorrectly.
Improved efficiency
Reverts a previous change by excluding the community malware database by default.
This may be re-enable via Advanced Preferences
Fixed typo in French localisation
Resolved issue with networked volumes unexpectedly being scanned on macOS 10.15 Catalina
Miscellaneous bug fixes
ClamXAV v3.0.14 - 10th October 2019
Qualified for use on macOS 10.15 Catalina
Improvements in Full Disk Access
Improvements to speed of malware database download and verification
ClamXAV Menu item now updates properly when subscription is renewed
Improved efficiency for removing some particularly stubborn malware
Resolved various issues with mail scanning script
Fixed issue where the email scanning script wasn't being updated properly
Resolved an issue with scheduling
Fix for Time Machine volume still getting scanned despite being excluded
Fix for excessive CPU usage caused by already-heavy load on the computer
Resolved issues with preferences override for enterprise customers
Resolved an issue with mounting remote volumes during a Quick Scan
ClamXAV Menu Item no longer jumps up and down during scanning/updating
ClamXAV v3.0.12 - 15th July 2019
Added the ability to deactivate your Mac so you can move your licence to another Mac
Added ability (via expert global pref SentryQuarantineDisabled ) to turn off Sentry auto-quarantining
Added log rotation for ClamXAV-helper.log file
Improved installation of the email scanning script
Resolved various bugs with the email scanning script
Improved handling of corrupt files
Improved reliability of built-in uninstaller
Removed some more unnecessary log output
Updated non-English translations
ClamXAV v3.0.11 - 13th May 2019
Improved support for home folders which have been moved onto different volumes
Improvements to malware database download process
Improved handling of situation when Apple Mail failed to download an email's attachments
Improvements in subscription handling
Fixed issue which could cause ClamXAV to be unresponsive with an empty Source List
Fixed issue which prevented ClamXAV checking its own app updates properly
Removed some unnecessary log output
Updated date in the copyright strings
ClamXAV v3.0.10 - 29th April 2019
ClamXAV is now notarized via the Apple Notarization Service
Improved visibility of the "Advanced Ignore Settings" button
Improved support for scanning email via Apple Mail *
Included command line interface to update malware database†
Improved the ability to delete hard-to-remove malware
Prevent continuous alert sounds during database update if app his hidden or minimized to Dock
Fixed issue where ClamXAV might crash when a disk is connected
Fixed issue where Sentry doesn't disable properly
Fixed an intermittent issue where the Source List wouldn't populate
Fixed an intermittent issue downloading malware database updates
* Create a mail rule in Apple Mail to trigger on "Every Message". Perform a "Run Applescript" action and specify "Scan with ClamXAV".
- Infected items will be coloured with a blue background and moved to Junk.
† Installed at /usr/local/ClamXAV3/bin/XAV
ClamXAV v3.0.9 - 30th December 2018
Fix for issue with scheduled scans
ClamXAV v3.0.8 - 19th December 2018
Improvements in malware database updates
Performance enhancements
No longer automatically scans connected hard disks at startup
Fixes for German localisation issues
Fix for intermittent issue which left source list empty
Fix for high cpu usage under certain conditions
ClamXAV v3.0.7 - 26th September 2018
Performance improvements
ClamXAV v3.0.6 - 24th September 2018
Support for macOS 10.14 Mojave and Dark Mode
Added Brazilian Portugese localisation
Improved Sentry handling of external volumes
Improved drag and drop support for excluding files and folders
ClamXAV will now wait for an internet connection before attempting to update its malware database
Fixed hang which could occur at launch if one of the database files was missing
Fixed erroneous reports of Malware database update failed (32767) in the Reports window
ClamXAV v3.0.5 - 5th September 2018
Speed and stability improvements
Improvements to engine installation & repair
Fixed issue of constantly repairing the scanning engine
Fixed issue with ClamXAV Menu Item crashing upon first installation
Improved handling of network volumes
Sentry now properly recognises and completely ignores Time Machine backup disks
Resolved issue where database update stayed at 0% despite the update actually taking place in the background
The Reports Window no longer allows you to select "Reveal in Finder" for a file that's been deleted
Improved wording for incomplete scans in the Reports Window
ClamXAV v3.0.4 - 21st August 2018
Stability improvements
Reduced CPU usage during scan
Fix for Sentry not honouring the "scan inserted volumes" setting
Improved handling of Time Machine and Time Capsule disks
Improved handling of app updates via the ClamXAV Menu Item
Fixed issue where scan settings may not be saved when changing selected source list item
Fixed issue that caused Little Snitch to block ClamXAV's internet access
ClamXAV v3.0.3 - 16th August 2018
Improved wording of Sentry options in the Settings Area
Fixed issues regarding downloading malware database
Fixed inability to disable Sentry background monitor
Fixed crash related to handling of exclusion settings
ClamXAV v3.0.2 - 15th August 2018
Fix for issues downloading malware database
ClamXAV v3.0.1 - 15th August 2018
Fix for German localisation
Fixed ClamXAV 2 registration key recognition for commercial licences
ClamXAV v3.0 – 15th August 2018
Everything is new. Every single bit.
There’s far too much to list everything here, but here are some headline updates:
The biggest update since 2009!
Totally rebuilt from the ground up
Completely new user interface but it should still feel familiar
Vastly improved, fully-integrated, log viewer
Reduced CPU usage of main app
You can run multiple scans at one time
Complete integration of all component parts (Main app, Sentry, Scheduling, Reports)
Smart source list which automatically displays all available volumes.
You can now have per-source-item scan settings
…along with different exclude settings per scan item
You can enable/disable quarantine per scan item
… and even enable/disable quarantine during a scan
We’ve added copy & paste support for “exclude file settings” (between source list items as well as copying files from Finder)
If you quit ClamXAV, the scan will continue
All-new ClamXAV menu item which shows progress of all current scans and database updates
There’s so much more, but I think you get the gist. It’s all new!